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The finite volume effects on the critical endpoint of chiral phase transition in Nambu–JonaLasinio model with different regularization schemes Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230818
Siyuan Ping, Xiaobing Zhang, Guifeng Su, Yi ZhangIn this paper, we study the influence of different regularization schemes on the critical endpoint (CEP) of chiral phase transition within a cubic box with volume V∼L3. A twoflavor Nambu–JonaLasinio model at finite temperature T and chemical potential μ is adopted as the effective model of the strong interacting matter. Due to the finite volume of the box, the momentum integral in gap equation is

Scattering of evanescent particles Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230817
Robert OecklMassive Klein–Gordon theory is quantized on the timelike hypercylinder in Minkowski space. Crucially, not only the propagating, but also the evanescent sector of phase space is included, laying in this way foundations for a quantum scattering theory of fields at finite distance. To achieve this, the novel αKähler quantization scheme is employed in the framework of general boundary quantum field theory

Strong decay properties of single heavy baryons ΛQ, ΣQ and ΩQ Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230817
GuoLiang Yu, Yan Meng, ZhenYu Li, ZhiGang Wang, Lu JieMotivated by recent progresses in experiments in searching for the Ωc baryons, we systematically analyze the strong decay behaviors of single heavy baryons ΛQ, ΣQ and ΩQ. The twobody strong decay properties of Swave, Pwave and some Dwave states are studied with the 3P0 model. The results support assigning the recently observed Ωc(3185) and Ωc(3327) as the 2S(32+) and 1D(32+) states, respectively

Asymmetry engendered by symmetric kink–antikink scattering in a degenerate twofield model Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230817
Fabiano C. Simas, K. Z. Nobrega, D. Bazeia, Adalto R. GomesIn this paper, we analyze the scattering process in a twofield model in (1+1) dimensions, with the special property to have several topological solutions: (i) one with higher rest mass, characterized by a nested defect (lump inside a kink) and (ii) four others having lower rest mass, degenerated, and characterized by a kink inside kink. We investigate kink–antikink symmetric scattering, where the

Fubini–Study geometries in the higherdimensional gravity Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230818
A. M. GhezelbashWe construct approximate solutions to the Einstein–Maxwell theory with uplifting the fourdimensional Fubini–Study Kähler manifold. We find the solutions can be expressed as the integrals of two special functions. The solutions are regular almost everywhere except a bolt structure on a single point in any dimensionality. We also show that in the context of considered ansatzes for the metric function

Twisted selfduality Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230817
David S. Berman, Tancredi Schettini GherardiniWe examine a generalization of the usual selfduality equations for Yang–Mills theory when the color space admits a nontrivial involution. This involution allows us to construct a nontrivial twist which may be combined with the Hodge star to form a twisted selfdual curvature. We will construct a simple example of twisted selfduality for su(2)⊕su(2) gauge theory along with its explicit solutions,

Comparison between some machine learning algorithms on predicting the spectra of quark–antiquark bound states Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230818
T. A. Nahool, Atef Ismail, Samah K. Elshamndy, A. M. YasserThis study is devoted to investigate the implementation of machine learning methodologies in the prediction of Quark–antiQuark bound state spectrum. Predictions are produced by using variety of machine learning (ML) approaches, such as ridge regression, random forest regression, linear regression and Knearest neighbors regression methods. The forecasts are then evaluated and contrasted in order to

The full Lorentzviolating vacuum polarization tensor: Low and highenergy limits Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230818
J. C. C. Felipe, A. Yu. Petrov, A. P. Baêta Scarpelli, A. R. VieiraIn this paper, we compute the full vacuum polarization tensor in the fermion sector of Lorentzviolating quantum electrodynamics (QED). It turns out to be that even if we assume momentum routing invariance of the Feynman diagrams, it is not possible to fix all surface terms and find an ambiguityfree vacuum polarization tensor. The high and lowenergy limits of this tensor are obtained explicitly

Elliptic modular graphs, eigenvalue equations and algebraic identities Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230817
Anirban BasuWe obtain eigenvalue equations satisfied by various elliptic modular graphs with five links where two of the vertices are unintegrated. Solving them leads to several nontrivial algebraic identities between these graphs.

Critical behavior and Joule–Thomson expansion of charged antide Sitter black hole in fourdimensional Rastall gravity Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230817
MengYao Zhang, Hassan Hassanabadi, Hao Chen, ZhengWen Long, Hui YangIn this work, we investigate the thermodynamics of fourdimensional charged antide Sitter (AdS) black hole surrounded by perfect fluids in the context of Rastall theory. We derive the equations of state by considering the charge square Q2 and the metric parameter Ns as the thermodynamic variables. The Q2−Φ and Ns−Θs figures for some special surrounding fields were analyzed in detail. To better explain

Entropy product function and central charges in NUT geometry Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230817
Parthapratim PradhanWe define an entropy product function (EPF) for Taub–Newman–Unti–Tamburino (TNUT) black hole (BH) following the prescription suggested by Wu et al. [Phys. Rev. D100, 101501(R) (2019)]. The prescription argues that a generic fourdimensional TNUT space–time might be expressed in terms of three or four different types of thermodynamic hairs. They can be defined as the Komar mass (M=m), the angular momentum

Radial powerlike potentials: From the Bohr–Sommerfeld Sstate energies to the exact ones Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230817
J. C. del Valle, A. V. TurbinerFollowing our previous study of the Bohr–Sommerfeld (BS) quantization condition for onedimensional case [J. C. del Valle and A. V. Turbiner, Int. J. Mod. Phys. A36, 2150221 (2021)], we extend it to ddimensional powerlike radial potentials. The BS quantization condition for Sstates of the ddimensional radial Schrödinger equation is proposed. Based on numerical results obtained for the spectra of

Axiomatic foundations of physical theories Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230817
Stefano Bellucci, Fabio CardoneIn this paper, we give a contribution to the taxonomy of physical theories. We provide here a thorough description of the axiomatic foundations of the most relevant physical theories, Mechanics, Special Relativity, General Relativity and Quantum Mechanics. The corresponding interactions will be dealt with as well, i.e. Gravity in the Minkowskian limit, Electricity without quantized energy, Gravity

Intrinsic and extrinsic CP violation in longbaseline neutrino experiments Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230817
Manoj Kumar, Monika Randhawa, Manmohan GuptaThe observation of CP violation in the longbaseline (LBL) neutrino experiments is complicated by the matter effects, wherein apart from the intrinsic/genuine CP violation the possibility of extrinsic/fake CP violation is also there. Using exact expressions of transition probabilities, we study the dependence of genuine and fake components of CP violation asymmetry on baseline length L and neutrino

Investigation of the confinement in massive QED3 Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230817
YanHao Liu, JianFeng LiBy the application of the Schwinger function, the deconfinement in massive quantum electrodynamics in (2+1)dimensional (QED3) is investigated. It is shown that oscillating behavior of the Schwinger function gradually disappears with fermion mass increasing based on coupled Dyson–Schwinger equations in massive QED3. On the other hand, we have shown that the confined fermion transfers gradually into

Thermodynamical study of black hole with cloud of strings and quintessence in the 4D Einstein–Gauss–Bonnet context Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230810
Hassan Shah, Hasrat Hussain Shah, Zahid Ahmad, Sardar Muhammad Hussain, Abdul Quayam KhanThis paper explores the effects of cloud of strings and quintessence on the thermodynamic features of the 4D Einstein–Gauss–Bonnet (EGB) Black Hole (BH). For this purpose, we have evaluated temperature, entropy, Gibb’s free energy and heat capacity of the 4D EGB BH in the presence of cloud of strings and quintessence. We have also shown the graphical behavior of all these physical quantities for various

Cosmological collider signals of nonGaussianity from higgs boson in GUT Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230810
Nobuhito Maru, Akira OkawaCosmological Collider Physics gives us the opportunity to probe highenergy physics from observing the space–time fluctuations generated during inflation imprinted on the cosmic microwave background. In other words, it is a method to investigate physics on energy scales that cannot be reached by terrestrial accelerators by means of precise observations of the universe. In this paper, we focus on the

Logarithmic inflation? Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230810
Jose María Fernández CristóbalWe consider a scalar–tensor action model, both simple and peculiar at the same time, with a boundary term added that it is forminvariant both under the conformal transformation of the metric as well as under the reparametrization of the scalar field. Under this assumption, the boundary term proposed matches (except factors) with the Gibbons–Hawking–York term proposed in such a way it cancels the term(s)

Newton’s equations from quantum mechanics for a macroscopic body in the vacuum Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230810
Kenichi KonishiNewton’s force law dPdt=F is derived from the Schrödinger equation for isolated macroscopic bodies, composite states of e.g. N∼1025,1051,… atoms and molecules, at finite body temperatures. We first review three aspects of quantum mechanics (QM) in this context: (i) Heisenberg’s uncertainty relations for their center of mass (CM), (ii) the diffusion of the CM wave packet, and (iii) a finite body temperature

Virasoro symmetries of the dispersionless coupled constrained KP hierarchy Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230805
Xiaoman Luo, Chuanzhong LiIn this paper, we construct the dispersionless coupled constrained KP hierarchy. We also introduce vital formal Laurent series 𝒴l,1,𝒴l,2 to construct new flows, which lead out the additional symmetries of the dispersionless coupled constrained KP hierarchy. The additional flows construct a subalgebra of the Virasoro algebra. In addition, we give the additional flows acting on μ(t,λ),μ̂(t,λ) and

The constrained state of minimum energy and the effective equation of motion Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230801
Amin AkhavanIn this paper, we define the state of minimum energy while the expectation values of the field operators and their time derivatives in a determined moment in such a state are constrained. As an axiom, we consider such a state as the background of the quantum field theory. As an example, we consider the scalar field with λ4!Φ4 interaction. To the thirdorder of perturbation, we obtain the equation of

Strong CP violation: Problem or blessing? Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230801
Goran Senjanović, Vladimir TelloWe readdress the issue of strong CP violation both in the Standard Model (SM) and in the Minimal Left–Right (LR) Symmetric Model and try to clear the confusion that seems to still pervade the field. We argue that the smallness of strong CP violation, while harmless and basically decoupled from the rest of the physics in the SM, in the context of LR symmetry provides a blessing by helping to narrow

Analytic results for the massive sunrise integral in the context of an alternative perturbative calculational method Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230801
G. Dallabona, O. A. BattistelAn explicit investigation about the equalmass twoloop sunrise Feynman graph is performed. Such a perturbative amplitude is related to many important physical process treated in the Standard Model context. The background of this investigation is an alternative strategy to handle the divergences typical for perturbative solutions of quantum field theory. Since its proposition, the mentioned method

DKP equation in Wigner–Dunkl quantum mechanics framework Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230729
Ali Askari, Hassan Hassanabadi, Won Sang ChungThis paper explores the topic of relativistic particles with zero spins from a unique perspective. Our approach is derived from the Dunkl derivative, which we used to investigate this issue. By examining the (1+1)dimensional DKP equation, we obtain eigenfunctions. Additionally, we replace the standard partial derivative with the Dunkl derivative and solve the relativistic particle problem in a box

On production of excited Kaluza–Klein states in large radius compactification scenario Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230718
Jnanadeva MaharanaProduction of exotic states at LHC is considered in the large radius compactification (LRC) scenario. We envisage a fivedimensional theory for a scalar field in fivedimensional flat space–time. It is compactified on a circle, S1, with radius, R. The radius is assumed to be in TeV scale appealing to LRC hypothesis. The production of Kaluza–Klein states whose masses lie in the vicinity of TeV range

Accretion in an asymptotically safe environment inspired by minimum measurable length Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230718
Anisur RahamanWe investigate the impact of the incorporation of minimum measurable length on accretion onto Schwarzschild black hole within the asymptotically safe ambiance. The Schwarzschild black hole is modified by the minimum measurable length associated with the generalized uncertainty principle (GUP), enabling it to accept the quantum gravity correction. We look at potential critical point locations and calculate

Entropy and its conservation in expanding Universe Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230718
Sinya Aoki, Kiyoharu KawanaIn this paper, we investigate properties of the conserved charge in general relativity, recently proposed by one of the present authors with his collaborators, in the inflation era, the matter dominated era and the radiation dominated era of the expanding Universe. We show that the conserved charge in the inflation era becomes the Bekenstein–Hawking entropy for de Sitter space, and it becomes the matter

Mass spectrum and decays of the first radial excitation axial vector meson nonet Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230718
XueChao Feng, KeWei WeiIn this work, the mass spectrum of the first radial excitation axial vector meson nonet is considered in the framework of the nonrelativistic constituent quark model and Regge phenomenology. After that, we investigate the strong decay characteristics of these states within the 3P0 model. The results are compared to values from other phenomenological models, and they may be beneficial in the prospective

Higherdimensional black holes in massive gravity charged with a conformalinvariant field Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230711
M. DehghaniMaking use of a model of nonlinear electrodynamics (NED), whose action remains invariant under conformal transformations, a new class of charged higherdimensional black holes (BHs) has been introduced in the massive gravity theory. Our exact solutions, with A(dS) asymptotic behavior, in addition to the BHs with one, two and three horizons, show the extreme and horizonless ones. The conserved and

Classical and quantum cosmology in Einstein–æther scalar–tensor gravity: Noether symmetry analysis Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230711
Dipankar Laya, Roshni Bhaumik, Sourav Dutta, Subenoy ChakrabortyThis work deals with Einstein–æther scalar–tensor gravity in the background of homogeneous and isotropic flat FLRW space–time model. The Noether symmetry vector identifies a transformation in the augmented space so that the field equations become solvable. The cosmological solutions are analyzed from the observational point of view. Finally, for quantum cosmology, the Wheeler–DeWitt (WD) equation has

Ambitwistor string amplitudes in lightlike linear dilaton background Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230711
Mayu Kato, Yu NakayamaUsing the ambitwistor string theory, we study graviton scattering amplitudes in a lightlike linear dilaton background of 10dimensional supergravity. At the tree level, we find that the threegraviton amplitude coincides with the typeII superstring theory, and the fourgraviton or more amplitudes differ from the superstring theory but satisfy the scattering equations. Due to a modified momentum conservation

Hawking radiation of rotating BTZ black hole based on modified dispersion relation and Rarita–Schwinger equation Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230711
Sapam Gayatri Devi, I. Ablu Meitei, T. Ibungochouba Singh, Aheibam Keshwarjit Singh, K. Yugindro SinghIn this paper, tunneling of fermions from rotating BTZ black hole is investigated using modified dispersion relation (MDR) and Rarita–Schwinger equation. The effect of MDR on the tunneling of fermions raises the Hawking temperature of rotating BTZ black hole. It is observed that the modified Hawking temperature of the black hole depends not only on the radial parameters of the black hole but also on

Solutions of onedimensional Dirac equation associated with exceptional orthogonal polynomials and the parametric symmetry Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230711
Suman Banerjee, Rajesh Kumar Yadav, Avinash Khare, Nisha Kumari, Bhabani Prasad MandalWe consider onedimensional Dirac equation with rationally extended scalar potentials corresponding to the radial oscillator, the trigonometric Scarf and the hyperbolic Pöschl–Teller potentials and obtain their solution in terms of exceptional orthogonal polynomials. Further, in the case of the trigonometric Scarf and the hyperbolic Pöschl–Teller cases, a new family of Dirac scalar potentials is generated

Comment on “Noether symmetry analysis in Chameleon field cosmology” Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230707
Andronikos PaliathanasisWe review the Noether symmetry analysis for the Chameleon cosmology presented in R. Bhaumik, S. Dutta and S. Chakraborty, Int. J. Mod. Phys. A 37, 2250018 (2022). We show that the classification problem for the field equations in Chameleon cosmology is still open.

W boson mass in singlettriplet scotogenic dark matter model Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230704
Aditya Batra, K. A. ShivaSankar, Sanjoy Mandal, Rahul SrivastavaThe recent high precision measurement of W boson mass by CDFII collaboration points to the contribution(s) of new physics beyond the Standard Model (SM). One of the minimalistic ways to account for the anomalous W boson mass is by introducing a hyperchargeless real SU(2)L triplet scalar whose vacuum expectation value (VEV) explicitly contributes to the W boson mass at the tree level while the Z boson

Generalized Darboux algorithms for Dunkl–Schrödinger equations with positiondependent mass at fixed energy Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230704
Axel SchulzeHalbergWe apply generalized Darboux transformations to Schrödinger equations at fixed energy that contain Dunkl derivatives, and are equipped with a positiondependent mass. Our Darboux transformations, originating from coupled Korteweg–De Vries systems, consist of two algorithms that generate new solutions, potentials and positiondependent mass functions for the Dunkl–Schrödinger system.

Analysis of the Tcs̄(2900) and related tetraquark states with the QCD sum rules Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230630
XiaoSong Yang, Qi Xin, ZhiGang WangIn this research, we tentatively assign the Tcs̄(2900) as the AĀtype tetraquark state, and study the mass spectrum of the tetraquark states with strange and doubly strange, which have the spinparity JP=0+, 1+ and 2+, in the framework of the QCD sum rules in details, where the A denotes the axialvectordiquark state. The predicted mass M=2.92±0.12GeV is consistent with the experimental values M=2

Bremsstrahlung in the field of a monopole Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230630
Giorgio CalucciThe emission of photons by a charge scattered by a monopole is studied. The scattering process is described in eikonal approximation while the photon emission is treated perturbatively. Since the motivation of the investigation is the possibility of using this process as indirect evidence of the existence of monopoles the emission following the scattering from a heavy charge is also studied, with the

Topological insulators in relativistic quantum mechanics Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230628
J. Gamboa, F. Méndez, R. RamírezBy employing supersymmetric quantum mechanics, the analog of relativistic quantum mechanics for topological insulators is considered. The procedure determines the general structure of the spin–orbit coupling even though it constrains the coupling constant. Through analogies with nonelativistic quantum mechanics, we construct relativistic Hamiltonians that share properties of topological insulators

Horizons of charged dilatonic (anti)de sitter black holes Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230623
Karim BenakliWe summarize our results on the presence and location of horizons in charged black hole solutions of Einstein–Maxwelldilaton theory with nontrivial dilaton potentials, asymptotically flat or (anti)de Sitter, as function of the black hole parameters mass, charge and dilaton coupling strength. We observe that there is a value of latter which separates two regions, one where the black hole is Reissner–Nordströmlike

Scalar Casimir effects in a Lorentz violation scenario induced by the presence of constant vectors Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230623
E. R. Bezerra de Mello, M. B. CruzIn this work, we consider a theoretical model that presents a violation of Lorentz symmetry in the approach of quantum field theory. The theoretical model adopted consists of a real massive scalar quantum field confined in the region between two large parallel plates. The violation of Lorentz symmetry is introduced by a CPTeven, aetherlike approach, considering a direct coupling between the derivative

Offshell chromomagnetic dipole moments of light quarks in the SM at and beyond the Z gauge boson mass scale Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230623
J. MontañoDomínguez, B. QuezadasVivian, F. RamírezZavaleta, E. S. TututiThe anomalous chromomagnetic dipole moment, with the gluon offshell, of the Standard Model (SM) light quarks (u, d, s, c and b), at the Z gauge boson mass scale, is computed by using the MS¯ scheme. The numerical results disagree with all the previous predictions reported in the literature and show a discrepancy of up to two orders of magnitude in certain situations.

A new viable mass region of dark matter and dirac neutrino mass generation in a scotogenic extension of SM Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230617
Nilavjyoti Hazarika, Kalpana BoraIn this paper, we propose a scotogenic extension of the Standard Model (SM) which can provide a scalar dark matter (DM) candidate in the new, theoretically previously unaddressed, intermediate region (200≤MDM≤550GeV) and also generate light Dirac neutrino masses. In this framework, the SM is extended by three gauge singlet fermions, two singlet scalar fields and one additional scalar doublet along

Upgrade of the scintillator detector for particle tracking in experiments with antiprotons Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230608
Giovanni Costantini, Giulia Gosta, Marco Leali, Valerio Mascagna, Stefano Migliorati, Luca Venturelli, Michela Prest, Federico Ronchetti, Luigi Solazzi, Erik VallazzaExperiments with antiprotons often require the tracking of charged particles emerging from the annihilation process. The Atomic Spectroscopy And Collisions Using Slow Antiprotons (ASACUSA) collaboration at the CERN Antiproton Decelerator (AD) used several panels of scintillating bars placed around the interaction region to detect the passage of charged pions and determine the annihilation vertex position

Tsallis statistics and thermofractals: Applications to high energy and hadron physics Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230608
Eugenio Megías, Evandro Andrade II, Airton Deppman, Arnaldo Gammal, Débora P. Menezes, Tiago Nunes da Silva, Varese S. TimóteoWe study the applications of nonextensive Tsallis statistics to high energy and hadron physics. These applications include studies of pp collisions, equation of state of QCD, as well as Bose–Einstein condensation. We also analyze the connections of Tsallis statistics with thermofractals, and address some of the conceptual aspects of the fractal approach, which are expressed in terms of the renormalization

Beam dynamics optimization in the LEBT of LLICTF Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230608
Yimeng Chu, Zhijun Wang, Weilong Chen, Kunxiang Sun, Chao Jin, Man Yi, Lingyun Gong, Yu Du, Duanyang JiaA Low Energy Beam Transport (LEBT) has been designed and optimized to inject both a 50keV/u, 50mA H+ beam and a 20keV/u, 1mA 3He2+ beam into the downstream Radio Frequency Quadrupole (RFQ) at the Lanzhou Light Ion Cancer Therapy Facility (LLICTF). The overall aim is to increase the operation efficiency and simplify the complexity of the LLICTF. This dualbeam operation mode creates phase space distortions

EGUPcorrected thermodynamics of BTZ black hole Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230608
B. Hamil, B. C. Lütfüoğlu, L. DahbiRecently, thermodynamics has given an important aspect of black hole physics, and it is being used as a solemn tool in characterizing the physicality and viability of many black hole (BH) solutions. On the other hand, Heisenberg algebraic deformations, which predict a lower bound to position and/or momentum, are interrogated to have a theory of quantum gravity. In this paper, we consider a combined

More on renormalizable exceptions to NelsonSeiberg theorem Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230608
Yu Nakayama, Takanobu YoshidaThe NelsonSeiberg theorem dictates conditions for the spontaneous breaking of the supersymmetry in Wess–Zumino models with generic, possibly nonrenormalizable, superpotential; the existence of the Rsymmetry is necessary while the spontaneous breaking of the Rsymmetry is sufficient. If we restrict ourselves to generic but renormalizable theories, however, there exist Wess–Zumino models whose vacua

Enumerative geometry of surfaces and topological strings Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230607
Andrea BriniThis survey covers recent developments on the geometry and physics of Looijenga pairs, namely pairs (X,D) with X a complex algebraic surface and D a singular anticanonical divisor in it. I will describe a surprising web of correspondences linking together several a priori distant classes of enumerative invariants associated to (X,D), including the log Gromov–Witten invariants of the pair, the Gromov–Witten

Wigner–Weyl calculus in description of nondissipative transport phenomena Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230601
M. A. ZubkovApplication of Wigner–Weyl calculus to the investigation of nondissipative transport phenomena is reviewed. We focus on the quantum Hall effect, Chiral Magnetic effect and Chiral separation effect, and discuss the role of interactions, inhomogeneity and deviations from equilibrium.

Mass spectroscopy and decay properties of Ξcb, Ξbb baryons Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230526
Amee Kakadiya, Chandni Menapara, Ajay Kumar RaiUsing the Hypercentral Constituent Quark Model (hCQM), the mass spectra of doubly heavy baryons Ξcb and Ξbb are determined. The model describes an interaction inside the baryonic system. Screened potential has been considered as confining potential with colorCoulomb potential to enumerate the masses of baryonic states. Regge trajectories have been plotted in (J,M2) plane. The properties like magnetic

Mass spectra of singly, doubly, triply lightstrange baryons in light of 𝒪(1m2) relativistic correction Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230526
Chandni Menapara, Ajay Kumar RaiThe hypercentral Constituent Quark Model (hCQM) has been employed to obtain the resonance masses of hadrons ranging from light, strange to heavy sector. This work is dedicated towards incorporating the higher order correction in the mass so as to improve the spinorder hierarchy. The potential is Coulomblike part and linear term as confinement part along with the spin–spin interaction terms. In this

New results from the DANSS experiment Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230523
Nataliya SkrobovaWe present new results from the DANSS experiment on the searches for sterile neutrinos. They are based on approximately 5 million inverse beta decay events collected at 10.9, 11.9 and 12.9m from the reactor core of the 3.1GW Kalinin Nuclear Power Plant in Russia. We do not see any statistically significant sign for the νẽ oscillations. The exclusion area in the Δm412, sin22θee parameter space goes

Shadow of the 5D Reissner–Nordström AdS black hole Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230517
Surajit Mandal, Sudhaker Upadhyay, Yerlan Myrzakulov, Gulmira YergaliyevaIn this paper, we discuss the shadow cast by the charged Reissner–Nordström (RN) antide Sitter (AdS) black hole. With the help of the Killing equation and Hamilton–Jacobi equation, we calculate the geodesic equations for null particles. With the help of geodesics of null particle, we then determine the celestial coordinates (α, β) and the shadow radius of the RN AdS black hole. We present a graphical

Effects of nontrivial topology with Coulombtypes scalar and vector potential on relativistic quantum motions of scalar charged bosons Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230517
Faizuddin AhmedIn this paper, we study the relativistic quantum motions of spinzero scalar bosons confined by the quantum flux field in the presence of Coulombtype scalar potential in the background of a topologically nontrivial 4D space–time. Afterwards, we introduce a Coulomblike vector potential through a minimal substitution in the wave equation and determine the eigenvalue solutions of the quantum system

Comparison of basic equations of the Kaluza–Klein theory with the nonholonomic model of space–time of the subLorentzian geometry Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230517
Victor R. KrymThe field equations of gravity coupled to electromagnetism and equations of motion of a charged particle are part of the Kaluza–Klein theory where general relativity is extended to five dimensions. These equations can also be obtained if nonholonomic constrains are imposed on the 5vector of particle’s velocity. Hence, further development of the general relativity theory can be subRiemannian (or subLorentzian)

Composite scalar boson mass dependence on the constituent mass anomalous dimension Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230511
A. Doff, A. A. NataleWe perform a Bethe–Salpeter equation (BSE) evaluation of composite scalar boson masses in order to verify how these masses can be smaller than the composition scale. The calculation is developed with a constituent selfenergy dependent on its mass anomalous dimension (γ), and we obtain a relation showing how the scalar mass decreases as γ is increased. We also discuss how fermionic corrections to the

Edge states and SUSY in (2+1)dimensional Maxwell Chern–Simons theory Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230506
Nirmalendu Acharyya, Akash SinhaIn a (2+1)dimensional Maxwell–Chern–Simons theory coupled with a fermion and a scalar, which has 𝒩=2 SUSY in the absence of the boundary, supersymmetry is broken on the insertion of a spatial boundary. We show that only a subset of the boundary conditions allowed by the selfadjointness of the Hamiltonian can preserve partial (𝒩=1) supersymmetry, while for the remaining boundary conditions SUSY

Space–time and large local transformations Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230506
Peter WestDedicated to the memory of Lars Brink (1943–2022) for his help and friendship over many years In this paper, we argue that the existence of solitons in theories in which local symmetries are spontaneously broken requires space–time to be enlarged by additional coordinates that are associated with large local transformations. In the context of gravity theories, the usual coordinates of space–time can

Analytic continuation of harmonic sums with purely imaginary indices near the integer values Int. J. Mod. Phys. A (IF 1.6) Pub Date : 20230428
V. N. VelizhaninWe present a simple algebraic method for the analytic continuation of harmonic sums with integer real or purely imaginary indices near negative and positive integers. We provide a MATHEMATICA code for exact expansion of harmonic sums in a small parameter near these integers. As an application, we consider the analytic continuation of the anomalous dimension of twist1 operators in the ABJM model, which