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Comment on: “Effects of the Kaluza–Klein theory on a Klein–Gordon particle with position-dependent mass” Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-08-23 Francisco M. Fernández
In this paper, we argue that the results shown in [Mod. Phys. Lett. A34, 1950319 (2019)] are not correct. The truncation of the Frobenius method only yields some particular bound states from which one cannot derive any sound physical conclusion. The existence of allowed model parameters is an artifact of such procedure. Besides, the authors failed to obtain most of the solutions given by the truncation
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Phonon modes of magnetic vortex lattices in finite isospin chiral perturbation theory Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-08-23 Prabal Adhikari, Elizabeth Leeser, Jake Markowski
We study phonon modes associated with magnetic vortex lattices of finite isospin chiral perturbation theory near the upper critical point by introducing quasimomentum fluctuations to the lattice and calculate dispersion relations associated with the optical and acoustic modes. We find that one of the acoustic modes is massless and that its energy for small transverse quasimomentum is quartic (due the
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Addendum: Signature-causality reflection generated by Abelian gauge transformations Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-08-17 Alcides Garat
An addendum for one hidden issue in manuscript “Signature-causality reflection generated by Abelian gauge transformations” is outlined.
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Stability analysis of axial geometry with anisotropic background in f(R,T) gravity Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-08-14 M. Z. Bhatti, Z. Yousaf, M. Yousaf
In this paper, we highlight the variables preserving stability of a very restricted class of anisotropic axial symmetrical compact geometry in the scenario of f(R,T) gravity, where T stands for energy–momentum tensor’s trace and R is invariant Ricci curvature. In the framework of f(R,T) gravity, we set up field equations as well as non-conservation equations. We use a perturbation technique for all
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Scale-invariant enhancement of gravitational waves during inflation Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-08-09 Atsuhisa Ota, Misao Sasaki, Yi Wang
The inflationary 1-loop tensor power spectrum from a spectator scalar field with a sharp peak is calculated. Recent studies on primordial black holes suggest that the inflationary curvature perturbation may be huge on small scales. An enhanced curvature perturbation may arise from a drastic enhancement of spectator scalar field fluctuations. In this paper, using the in-in formalism, we calculate 1-loop
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Resonance enhancement of the electromagnetic interaction between two charged particles in the bound state in the continuum Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-08-09 A. I. Agafonov
In bound states in the continuum (BIC) the mass of a composite particle is greater than the total mass of its constituents. The BIC state is investigated in a system of two charged particles a and b with different masses (mb≫ma), using the ladder Bethe–Salpeter equation. We demonstrate that there are two momentum space regions for the positive binding energy, in which the electromagnetic interaction
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Study of exclusive two-body W decays with fully reconstructible kinematics Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-08-09 Alsu G. Bagdatova, Sergey P. Baranov, Alexander S. Sakharov
In the framework of electroweak theory and perturbative quantum chromodynamics, we examine various exclusive decay channels of W bosons that can be fully or partially reconstructed. Our findings provide predictions for the partial widths and address some gaps in previous literature. We also place a strong emphasis on understanding and estimating the associated theoretical uncertainties.
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Effect of internal magnetic flux on a relativistic spin-1 oscillator in the spinning point source-generated spacetime Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-08-09 Abdullah Guvendi, Semra Gurtas Dogan
In this paper, we consider a charged relativistic spin-1 oscillator under the influence of an internal magnetic flux in a (2+1)-dimensional spacetime induced by a spinning point source. In order to analyze the effects of the internal magnetic flux and spin of the point source on the relativistic dynamics of such a vector field, we seek a non-perturbative solution of the associated spin-1 equation derived
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Self-force effects around charged (2+1)-dimensional BTZ black hole in the Einstein–Gauss–Bonnet gravity Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-08-09 Ayyesha K. Ahmed, Azad A. Siddiqui
In this paper, we discuss a mode sum regularization method for the self-force acting on a charged test particle moving around a Banados, Teitelboim and Zanelli (BTZ) black hole. First, we have calculated the self-force on each individual mode. Then we evaluated our result by summing up the contribution on each mode. We studied a general scheme for static black holes and then present the result for
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Harmonic oscillator in the context of the extended uncertainty principle Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-08-07 Bilel Hamil, Bekir Can Lütfüoğlu, Ahmed Hocine
At large-scale distances where the space-time is curved due to gravity, a nonzero minimal uncertainty in the momentum, (ΔP)min, is being estimated to emerge. The presence of minimal uncertainty in momentum allows a modification to the quantum uncertainty principle, which is known as the extended uncertainty principle (EUP). In this work, we handle the harmonic oscillator problem in the EUP scenario
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Tree-level new physics in R(K(∗)) Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-08-07 Jong-Phil Lee
We implement the χ2 fit for R(K(∗)) with possible tree-level new physics in a model-independent parametrization. Relevant Wilson coefficients are decomposed into the new physics scale, its power, and the fermionic couplings. Constraints from the branching ratio of Bs→μ+μ− can be naturally incorporated with the scheme. For a reasonable set of the parameter ranges it is found that the new physics is
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Conformal motions of static cylindrically symmetric solutions in f(T, B) gravity Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-08-07 Shabeela Malik, Fiaz Hussain, Sirajul Haq, Muhammad Ramzan
In this paper, we investigate the conformal vector fields (CVFs) of static cylindrically symmetric (SCS) spacetimes in f(T,B) gravity, a novel modified teleparallel gravity that connects both f(T) and f(R) theories via a boundary term B. Initially, we employ an algebraic approach to extract some classes that represent SCS solutions in f(T,B) gravity. Applying the above-mentioned approach, we find solutions
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Study of rotating gravastars Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-08-04 Krishna Pada Das, Ujjal Debnath
In this work, we have discussed about a rotating gravastar model and some physical aspects in the presence of an anisotropic fluid source in the framework of General Relativity. We have considered two cases: one is gravastar’s interior fluid rigidly (or slowly) rotates, and the other is gravastar’s interior fluid non-rigidly rotates. We have considered a gravastar with three regions: interior region
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Skyrmions at finite density Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-08-03 Fabrizio Canfora, Scarlett C. Rebolledo-Caceres
In this paper, we will describe recent advances in analytical methods to construct exact solutions of the Skyrme model (and its generalizations) representing inhomogeneous Hadronic condensates living at finite Baryon density. Such novel analytical tools are based on the idea to generalize the well-known spherical hedgehog ansatz to situations (relevant for the analysis of finite density effects) in
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The large-scale structure of the universe from a modified Friedmann equation Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-08-03 J. Ambjørn, Y. Watabiki
In this paper, we have suggested that the late time expansion of the Universe is caused by the absorption of baby universes. This absorption leads to a modified Friedmann equation with one free parameter B replacing the cosmological constant. The late time cosmology is modified in such a way that one can obtain agreement with the measured values of the Hubble parameter H(z) for z between 0 and the
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Complex quintessence theory, Tsallis and Kaniadakis holographic dark energy and Brans–Dicke cosmology Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-08-03 J. Sadeghi, S. Noori Gashti, T. Azizi
In this paper, we study two different dynamic structures of holographic dark energy, namely Tsallis and Kaniadakis, within the framework of Brans–Dicke cosmology. We consider the complex form of the quintessence model and examine both non-interacting and interacting cases, calculating various cosmological parameters such as the equation of state ω and discussing the behavior of ω−ω′. We modify the
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Deep anharmonicity on the relativistic spin-0 particles within the spherical regime Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-08-02 Sami Ortakaya
We present an oscillator model of relativistic spin-0 charges moving in quantum states with minimal electromagnetic field coupling. Rather than using a perturbative approach, we implemented anharmonicity directly under the integer-dependent levels. In this way, the rest mass energy is kept at 280MeV. Within the extended Pekeris approximation, we have also improved the deep approximation to the third
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Quantum semantic coding for structure extraction and matching applications Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-07-31 Yin-Xiao Han, Yun Pan, Jing-Tao Wang
Quantum Natural Language Processing (QNLP) is coded in the semantic space using a combined semantic distribution classification model with tensor operations. Its theoretical results on quantum circuit mapping and quantum semantic coding of text have been tested in practice with the recent development of quantum back-end equipment. In view of the small scale of quantum natural language processing tasks
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Open quantum system dynamics of X-states: Entanglement sudden death and sudden birth Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-07-29 Nikhitha Nunavath, Sandeep Mishra, Anirban Pathak
In this paper, the origin of disentanglement for two specific sub-classes of X-states namely maximally nonlocal mixed states (MNMSs) and maximally entangled mixed states (MEMSs) is investigated analytically for a physical system consisting of two spatially separated qubits interacting with a common vacuum bath. The phenomena of entanglement sudden death (ESD) and the entanglement sudden birth (ESB)
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Quantitative analysis of (3He,t) charge exchange reactions at 140 MeV/u beam energy Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-07-28 Ankita, Pardeep Singh
Composite particle, (3He,t), charge exchange reactions on targets 12C, 13C, 18O, 26Mg, 58Ni and 118,120Sn at 140 MeV/u beam energy have been analyzed by employing distorted wave impulse approximation (DWIA). Specifically, unit cross-section and angular distribution have been calculated using normal optical model potential (NOMP) and single folding optical model potential (SFOMP) for both relativistic
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Quantum broadcast and multicast with non-maximally channels Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-07-27 Safa Jami, Monireh Houshmand
Broadcast and multicast protocols are two branches of multi-party quantum communication. Implementing these protocols based on partial entanglement is of great practical importance since maximally entangled channels are not robust due to noise applied by the surrounding environment. Previous research has used global operators (i.e. operators which are applied on the qubits owned by different parties)
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A study of cosmological dynamics of expansion in modified gravity and phase–space analysis Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-07-26 Muhammad Zahid Mughal, Iftikhar Ahmad
Accelerating cosmic expansion is a challenging issue faced by cosmology in the present times. Modified gravity could present a promising choice in order to understand and explain it in its framework. In this context, f(R) models of modified gravity look apparently the most compatible and viable scenario. In this work, we investigate the cosmic dynamics of the late times using a dynamical system approach
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Erratum: QED-based derivation of the general forms of the relativistic Doppler effect and of the relativistic aberration for uniformly rotating frames and for uniformly accelerated frames Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-07-26 A. Sfarti
The current paper corrects an error that occurred in a previously published paper. The error starts from Sec. 3, Eq. (3.2) whereby the scalar value of the wave-vector needs to be corrected. The net result is that the final formulas for the relativistic Doppler effect and for aberration get simplified. The source of the error is an extra multiplication factor by “c”. We need to replace the incorrect
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Hyperbolic behavior of anisotropic Bianchi type-I cosmological model Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-07-25 Md Khurshid Alam, S. Surendra Singh
Locally Rotationally Symmetric (LRS) Bianchi type-I metric is examined in the presence of perfect fluid. Exact solutions of Einstein’s field equations (EFE) have been studied by taking into account a hyperbolic scale factor. We observed that the model has initial singularity. It is found that the Universe approaches isotropy at late times. Through state finder pair {r,s}, it is observed that at late
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Amplitude damping error on QKD: Effect and a probable bypass Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-07-22 Munsi Afif Aziz, Bishwajit Prasad Gond, Srijita Nandi, Soujanya Ray, Debasmita Bhoumik, Ritajit Majumdar
Quantum cryptography was proposed as a counter to the capacity of quantum computers to break classical cryptosystems. A broad subclass of quantum cryptography, called quantum key distribution (QKD), relies on quantum mechanical process for secure distribution of the keys. Quantum channels are inherently noisy, and therefore these protocols will be susceptible to noise as well. In this paper, we study
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Particle motion around Schwarzschild-MOG black hole Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-07-21 Madina Boboqambarova, Bobur Turimov, Ahmadjon Abdujabbarov
In this paper, we present an analysis of the circular motion of test particles around a Schwarzschild-MOG black hole. Initially, our focus lies on studying the shadow cast by the spherically symmetric black hole within the framework of MOG gravity. Notably, we observe that the presence of MOG influences both the photon-sphere and the black hole’s shadow, causing them to increase in size. Furthermore
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An anisotropic interior solution of Einstein equations Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-07-18 Manuel Vazquez-Nambo, Víctor Manuel Yépez-García, José Oswald Tellez Vazquez, Elivet Aguilar Campuzano, Nancy Cambrón Muñoz
In this work, the analysis of the behavior of an interior solution in the frame of Einstein’s general theory of relativity is reported. Given the possibility that, for greater densities than the nuclear density, the matter presents anisotropies in the pressures and that these are the orders of density present in the interior of the compact stars, the solution that is discussed considers that the interior
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Inflationary magnetogenesis of primordial magnetic fields with multiple vector fields Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-07-19 Yu Li, Le-Yao Zhang
In this paper, we discussed the multiple vector fields during the inflation era and the inflationary magnetogenesis with multiple vector fields. Instead of a single coupling function in single vector field models, the coupling matrix between vector fields and scalar field which drive the inflation is introduced. The dynamical equations for multiple vector fields are obtained and applied to the inflation
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Primordial black holes in interferometry Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-07-19 L. Stodolsky
If there is a population of black holes distributed randomly in space, light rays passing in their vicinity will acquire random phases. In the “two-slit” model of an interferometer this can, for a high density of black holes, lead to a diffusion in the phase difference between the two arms of the interferometer and thus to a loss of coherence or “visibility” in interferometric observations. Hence the
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An anisotropic interior solution of Einstein equations Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-07-18 Manuel Vazquez-Nambo, Víctor Manuel Yépez-García, José Oswald Tellez Vazquez, Elivet Aguilar Campuzano, Nancy Cambrón Muñoz
In this work, the analysis of the behavior of an interior solution in the frame of Einstein’s general theory of relativity is reported. Given the possibility that, for greater densities than the nuclear density, the matter presents anisotropies in the pressures and that these are the orders of density present in the interior of the compact stars, the solution that is discussed considers that the interior
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Quantum interferometric power and Bures distance entanglement versus normalized steered coherence under random telegraph noise Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-07-12 S. Elghaayda, M. Y. Abd-Rabbou, M. Mansour
This study examines the impact of random telegraph noise on non-separability, non-classicality, and steered coherence in a bipartite system initially prepared in a Gisin state and embedded in both Markovian and non-Markovian environments. To quantify non-separability, we employ the Bures distance entanglement measure (ℬ); for non-classicality detection, we utilize the quantum interferometric power
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Reflective ability and its energy dependence Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-07-12 S. M. Troshin, N. E. Tyurin
We introduce the notion of reflective ability and discuss its energy dependence using rational form of unitarization. Correspondence with the phase of exponential unitarization is traced. Increase of the reflective ability of interaction region starts at the LHC energies. Numerical estimates are given.
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Lie symmetry classification for the 1+1 and 1+2 generalized Zoomeron equations Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-07-10 Andronikos Paliathanasis, P. G. L. Leach
We present a complete algebraic classification of the Lie symmetries for generalized Zoomeron equations. For the generalized 1+1 and 2+1 Zoomeron equations we solve the Lie symmetry conditions in order to constrain the free functions of the equations. We find that the differential equations of our consideration admit the same number of Lie symmetries with the non-generalized equations. The admitted
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A viable relativistic charged model of super-dense star LMC X-4 Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-07-10 Aurelio Tamez Murguía, Manuel Vázquez-Nambo, Víctor Manuel Yépez-García, Nancy Cambrón Muñoz, José Oswald Téllez Vázquez
In this work, we present an exact interior solution to a physically acceptable Einstein–Maxwell equation system, assuming a static and spherically symmetric spacetime with a distribution of matter from a perfect charged fluid to represent a generalization of a model for a perfect chargeless fluid. The charge parameter modifies the mass function, its compactness rate and the comportment of the speed
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Linear scaling of lepton charge asymmetry in W± production in ultra-relativistic nuclear collisions from PACIAE model Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-07-07 An-Ke Lei, Dai-Mei Zhou, Yu-Liang Yan, Xiao-Ming Zhang, Liang Zheng, Du-Juan Wang, Xiao-Mei Li, Gang Chen, Xu Cai, Ben-Hao Sa
The lepton charge asymmetry in W± production in the nuclear collisions at sNN=5.02TeV is investigated with a parton and hadron cascade model PACIAE. Recently published ALICE and the ATLAS data of lepton charge asymmetry are well reproduced. An interesting linear scaling behavior is observed in the lepton charge asymmetry as a function of the collision system valence quark number asymmetry among different
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Mass spectra of double-bottom baryons Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-07-07 Zhen-Yu Li, Guo-Liang Yu, Zhi-Gang Wang, Jian-Zhong Gu, Hong-Tao Shen
Based on the relativistic quark model and the infinitesimally shifted Gaussian basis function method, we investigate the mass spectra of double-bottom baryons systematically. In the ρ-mode which appears lower in energy than the other excited modes, we obtain the allowed quantum states and perform a systematic study of the mass spectra of the Ξbb and Ωbb families. We analyze the root mean square radii
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Long-range entanglement between spin qubits in quantum dots by virtual photon process Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-07-07 Ye-Bin Hu, Rong Chen, Guo-Qing Yan, Xing-Yu Zhu
Electron spin qubits in silicon quantum dots are an attractive candidate for large-scalable quantum computation. An essential step for quantum information processing based on spin qubits is to realize the spatially separated two-qubit gate and entanglement with high fidelity. Here, we consider two spin qubits coupled to a common superconducting resonator in circuit quantum electrodynamics. We investigate
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P−V criticality of the nonlinear charged black hole solutions in massive gravity’s rainbow Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-07-07 Houcine Aounallah, Hayede Zarei, Prabir Rudra, Barun Majumder, Hoda Farahani
In this paper, we explore the black hole solutions with the rainbow deformed metric in the presence of the exponential form of the nonlinear electrodynamics with asymptotic Reissner–Nordström properties. We calculate the exact solution of metric function and explore the geometrical properties in the background of massive gravity. From the obtained solution, the existence of the singularity is confirmed
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Cryptanalysis of quantum private comparison with six-particle maximally entangled states Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-07-05 Chia-Wei Tsai, Chun-Wei Yang, Chun-Hsiang Wang, Jason Lin
The measurement property of the six-particle maximally entangled state was used by Sun [Mod. Phys. Lett. A 37, 2250149 (2022)] to design a quantum private comparison (QPC) protocol. However, this study points out that the entanglement property of the six-particle maximally entangled state is inconsequential as a security measure; that is, participants waste resources to store the entanglement state
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CDF-II W boson mass in the Dirac scotogenic model Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-07-05 Salvador Centelles Chuliá, Rahul Srivastava, Sushant Yadav
The Dirac scotogenic model provides an elegant mechanism which explains small Dirac neutrino masses and neutrino mixing, with a single symmetry simultaneously protecting the “Diracness” of the neutrinos and the stability of the dark matter candidate. Here, we explore the phenomenological implications of the recent CDF-II measurement of the W boson mass in the Dirac scotogenic framework. We show that
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Evolution of Rényi-2 quantum correlations in a double cavity–magnon system Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-06-27 Abdelkader Hidki, Abderrahim Lakhfif, Jamal El Qars, Mostafa Nassik
This work reports on the stationary evolution of three different kinds of quantum correlations between two distant magnon modes. The system at hand consists of two spatially separated cavities, where each cavity has a microwave (MW) cavity and a magnon mode. The two cavities are coupled to each other via the photon-tunneling process, and both are exposed to the output field of a squeezed vacuum MW
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The production of charged particles and the kaonic nuclei K−pp and K+p̄p̄ in Au + Au collisions at s = 130 GeV Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-06-26 Natthaphat Thongyoo, Pornrad Srisawad, Kristiya Tomuang, Panadda Sittiketkorn, Phacharatouch Chaimongkon, Yu-Liang Yan, Ayut Limphirat, Chinorat Kobdaj, Sukanya Sombun, Yupeng Yan
This study investigates the production of charged particles and the kaonic nuclei K−pp and K+p̄p̄ in Au+Au collisions at s=130 GeV. The parton and hadron cascade model PACIAE 2.1 is used to calculate the yield of charged particles, and the Dynamically Constrained Phase–space Coalescence (DCPC) model is used to calculate the yield of kaonic nuclei. Results showed that the yield of charged particles
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A metric for gravitational collapse around a Schwarzschild black hole Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-06-26 Recai Erdem, Betül Demirkaya, Kemal Gültekin
We consider the problem of gravitational collapse of a fluid under the effect of a small Schwarzschild black hole (e.g. a primordial one). We assume the fluid initially may be approximated by a uniform homogeneous dust. Starting from this configuration we obtain a class of metrics under some physically justified assumptions. We find that the metric we obtain includes the dust collapse as a subcase
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Study of cosmic acceleration in modified theories of gravity through Kaniadakis holographic dark energy Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-06-22 Abdul Jawad, Zain ul Abideen, Shamaila Rani
In this paper, we investigate the cosmic analysis of Kaniadakis holographic dark energy model in the frameworks of f(G) and f̃(T) modified theories of gravity. We reconstruct functional forms of f(G) and f̃(T) models by using a well-known power-law form of scale factor and flat FRW metric. The behavior of these functional forms with respect to their arguments is discussed. Using these models, various
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An algebraic approach for the Dunkl–Killingbeck problem from the bi-confluent Heun equation Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-06-22 S. Rahmani, H. Panahi, A. Najafizade
In this paper, we study the Dunkl–Killingbeck problem in two dimensions. We apply the Lie algebraic approach within the framework of quasi-exact solvability to the radial part of the Dunkl–Killingbeck problem to find the general exact expressions for the energies and corresponding wave functions. The allowed values of the potential parameters are the representation space of sl(2) Lie algebra. In addition
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Yang–Mills effective Lagrangian — Contribution of Leutwyler zero mode chromons Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-06-20 George Savvidy
Recently, we calculated the contribution of Leutwyler zero mode chromons to the Yang–Mills effective Lagrangian by integrating over collective coordinates of the nonlinearly interacting zero modes. Here, we analyze the behavior of the partition function prefactor and the integration measure Jacobian of the zero modes and show that these factors do not contribute to the effective Lagrangian and do not
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The influence of dark matter on the motion of asteroids Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-06-20 Haoran Di, Haihao Shi, Yanli Peng
The standard model of cosmology shows that there is about 26.8% dark matter in the universe. Although many dark matter models have been proposed, the nature of dark matter is still not clear at present. There are two major candidates for dark matter, dark matter particles and primordial black holes. However, it is difficult to distinguish these two kinds of dark matter models by using the gravitational
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f(R) gravity model for dark energy and dark matter Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-06-20 Jiwon Park, Tae Hoon Lee
In this paper, we suggest an f(R) gravity model for the dark energy, which can also be applied for a kind of galactic dark matter. Constructing the f(R) gravitational Lagrangians by Legendre transform from scalar-tensor theories, we study a future behavior of the late-time accelerating Universe as well as a subsequent behavior of an inflation model. Moreover, we discuss possible relations to the galactic
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Dissociation of heavy quarkonium states in a rapidly varying strong magnetic field Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-06-05 Partha Bagchi, Nirupam Dutta, Souvik Priyam Adhya, Bhaswar Chatterjee
Various heavy quarkonium states can be employed as a testing ground for the magnetic field created and later possibly persisted in heavy ion collision (HIC) experiments. In this paper, we have shown the modification in the binding energies, and ionization potentials categorically for different species of quarkonia in the medium in the presence of a magnetic field. For the study, we have considered
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Finite-group gauge theories on lattices as Hamiltonian systems with constraints Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-06-07 M. F. Araujo de Resende
In this work, we present a brief but insightful overview of the gauge theories, which are defined on n-dimensional lattices by using finite gauge groups, in order to show how they can be interpreted as a Hamiltonian system with constraints, analogous to what happens with the classical (continuous) gauge (field) theories. As this interpretation is not usually explored in the literature that discusses/introduces
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Planck formula for the gluon parton distribution in the proton Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-06-07 Loredana Bellantuono, Roberto Bellotti, Franco Buccella
In this paper, we describe the gluon parton distribution function (PDF) in the proton, deduced by data from the ATLAS and HERA experiments, in the framework of the parton statistical model. The best fit parameters involved in the Planck formula that describes the gluon distribution are consistent with the results obtained from analysis of LHC deep inelastic proton–proton scattering processes. Remarkably
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Angular momentum and NMR: A brief note Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-06-06 G. S. Burra
Using noncommutative infinitesimal rotations, we work out a formulation for angular momentum which leads to an expression for nuclear magnetic resonance (NMR). We also indicate a cosmic footprint of these considerations, much like the 21 cm radio signal of cosmic Hydrogen. Here, the motivation is that there are a number of “second-order effects” which provide results over and above the usual well-known
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Higgs pt distribution in Higgs + jet production at hadron colliders within the noncommutative effective standard model Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-06-01 Mohamed El Arebi Gadja, Lamine Khodja, Yazid Delenda
We use the noncommutative Higgs effective standard model to make a phenomenological prediction for the transverse momentum distribution of the Higgs boson produced in association with a jet at hadron colliders. We calculate at leading order in the noncommutative parameter Θ as well as leading order in the strong coupling αs, the one-loop pt distribution of the Higgs boson. As in the standard model
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Higgs pt distribution in Higgs + jet production at hadron colliders within the noncommutative effective standard model Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-06-01 Mohamed El Arebi Gadja, Lamine Khodja, Yazid Delenda
We use the noncommutative Higgs effective standard model to make a phenomenological prediction for the transverse momentum distribution of the Higgs boson produced in association with a jet at hadron colliders. We calculate at leading order in the noncommutative parameter Θ as well as leading order in the strong coupling αs, the one-loop pt distribution of the Higgs boson. As in the standard model
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Generalized fractional of the extended Nikiforov–Uvarov method for heavy tetraquark masses spectra Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-05-29 M. Abu-Shady, M. M. A. Ahmed, N. H. Gerish
In this paper, the new analytic–exact energy eigenvalues and eigenfunctions are obtained in the fractional forms by using the extended Nikiforov–Uvarov approach in which the heavy diquark systems are described. We have recalculated the mass spectra and fractional radial wave of heavy tetraquarks. The mass spectra are compared to the experimental data. The present results show a good agreement with
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Theoretical predictions for α-decay chains and cluster radioactivity of superheavy nuclei with Z = 126 Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-05-26 A. Adel, T. Alharbi
Theoretical predictions of α-decay properties of several isotopes of the superheavy nucleus of Z=126(318–327126) and their consecutive α-decay chains are presented. Based on the double-folding model, the α–daughter interaction potential is constructed microscopically using a realistic M3Y–Paris nucleon–nucleon (NN) interaction. The α-decay half-lives are computed for both spherical and deformed shapes
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Leptonic flavor changing processes ℓi → ℓjγ and ℓi → ℓjℓkℓl in the Twin Higgs models Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-05-26 Guo-Li Liu, Fei Wang, Wenyu Wang
Heavy neutrinos are usually introduced to accommodate tiny neutrino masses via seesaw mechanism, or to alleviate the cosmology problem, and there may exist charged Higgs which couple to the leptons with different flavors. These two features can appear in the Twin Higgs models. What interests us is that such new particles and interactions may lead to new contributions to the lepton flavor violating
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Conservation of boundary term for gravitational action Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-05-26 Shiladittya Debnath, Brajagopal Majumder
In this paper, we intend to establish a rigorous mathematical relation between the Gibbons–Hawking–York (GHY) boundary term and the conserved symmetric current which arises due to Noether’s second theorem. The GHY term is necessary to ensure that the equations of motion in general relativity are well-posed, and it is a key ingredient in the thermodynamics of black holes and the derivation of the Bekenstein–Hawking
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Degeneration of the Grover search algorithm with depolarization in the oracle-box wires Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-05-23 Alexey E. Rastegin, Anzhelika M. Shemet
Grover’s search algorithm and similar techniques are widely used in quantum information science. Communication lines with the so-called oracle are one of inevitable vulnerabilities of quantum search. The impact of localized dephasing and amplitude damping on Grover’s algorithm had already been discussed in recent literature. In this paper, we study the influence of depolarization in the oracle-box
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A model of dark matter and energy Mod. Phys. Lett. A (IF 1.4) Pub Date : 2023-05-23 Paul H. Frampton
We discuss a model of the universe where dark energy is replaced by electrically-charged extremely-massive dark matter. The cosmological constant has a value of the same order as the mean matter density, consistent with observations, and is obtained classically without fine-tuning.