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  • A radiative seesaw model with three Higgs doublets in modular A4 symmetry
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-10-15
    Hiroshi Okada; Yutaro Shoji

    We propose a radiative seesaw model based on a modular A4 symmetry, which has good predictability in the lepton sector. We execute a numerical analysis to search for parameters that satisfy the experimental constraints such as those from neutrino oscillation data and lepton flavor violations. Then, we present several predictions in our model that originate from the modular symmetry at a fixed point

    更新日期:2020-10-21
  • One-loop Type II seesaw neutrino model with stable dark matter candidates
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-10-16
    M.A. Loualidi; M. Miskaoui

    Opening up the Weinberg operator at 1-loop level using a scalar triplet, two scalar doublets and one fermion give rise to T4-2-i one-loop topology. Neutrino masses generated from this topology are always accompanied by the tree level Type II seesaw contribution. In this work, we propose a radiative Majorana neutrino mass model based on this topology where to avoid the tree level Type II seesaw mechanism

    更新日期:2020-10-21
  • Signal detection using biphotons and potential application in axion-like particle search
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-10-14
    Le Phuong Hoang; Xuan Binh Cao

    This paper presents a new optical system for detecting light signals associated with the change in incoming photon number. The system employs quantum correlation of photon pairs created via spontaneous parametric down-conversion (SPDC). The signal, if present, will perturb the flux of the incident photon stream. The perturbed photon stream is first projected through a birefringent crystal where SPDC

    更新日期:2020-10-21
  • Nonrelativistic strings on R × S2 and integrable systems
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-10-16
    Dibakar Roychowdhury

    We show that the (torsional) nonrelativistic string sigma models on R×S2 can be mapped into deformed Rosochatius like integrable models in one dimension. We also explore the associated Hamiltonian constrained structure by introducing appropriate Dirac brackets. These results show some solid evidence of the underlying integrable structure in the nonrelativistic sector of the gauge/string duality.

    更新日期:2020-10-21
  • Scalar field quasinormal modes of noncommutative high dimensional Schwarzschild-Tangherlini black hole spacetime with smeared matter sources
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-10-16
    Zening Yan; Chen Wu; Wenjun Guo

    We investigate the massless scalar quasinormal modes (QNMs) of the noncommutative D-dimensional Schwarzschild-Tangherlini black hole spacetime in this paper. By using the Wentzel-Kramers-Brillouin (WKB) approximation method, the asymptotic iterative method (AIM) and the inverted potential method (IPM), we made a detail analysis of the massless scalar QNM frequencies by varying the general smeared matter

    更新日期:2020-10-21
  • Painlevé V and the Hankel determinant for a singularly perturbed Jacobi weight
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-10-20
    Chao Min; Yang Chen

    We study the Hankel determinant generated by a singularly perturbed Jacobi weightw(x,t):=(1−x2)αe−tx2,x∈[−1,1],α>0,t≥0. If t=0, it is reduced to the classical symmetric Jacobi weight. For t>0, the factor e−tx2 induces an infinitely strong zero at the origin. This Hankel determinant is related to the Wigner time-delay distribution in chaotic cavities. In the finite n dimensional case, we obtain two

    更新日期:2020-10-21
  • Mixed state dynamics with non-local interactions
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-10-12
    Erik W. Lentz; Leon Lettermann; Thomas R. Quinn; Leslie J. Rosenberg

    The evolution of degenerate matter out of equilibrium is a topic of interest in fields such as condensed matter, nuclear and atomic physics, and increasingly cosmology, including inflaton physics prior to reheating. This work extends the recent paper on the super-de Broglie dynamics of pure condensates to the dynamics of mixed states. It is found that the two-body correlation function plays an increasingly

    更新日期:2020-10-19
  • Matter accretion onto higher-dimensional black holes with Dirac-Born-Infeld global defects via well known fluids
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-10-12
    M. Umair Shahzad; Rafaqat Ali; Abdul Jawad

    In this paper, we analyze the matter accretion onto higher dimensional black holes with Dirac-Born-Infeld (DBI) global defects by assuming general form of the recently proposed Hamiltonian and dynamical system for the fluid by considering the steady state flow. It is possible to obtain the analytic solution for isothermal equation of state and observe the heteroclinic flow in the presence of well-known

    更新日期:2020-10-19
  • Closed superstring moduli tree-level two-point scattering amplitudes in Type IIB orientifold on T6/(Z2 × Z2)
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-10-15
    Alice Aldi; Maurizio Firrotta

    We reconsider the two-point string scattering amplitudes of massless Neveu-Schwarz–Neveu-Schwarz states of Type IIB orientifold superstring theory on the disk and projective plane in ten dimensions and analyse its α′ expansion. We also discuss the unoriented Type IIB theory on T6/Z2×Z2 where two-point string scattering amplitudes of the complex Kähler moduli and complex structures of the untwisted

    更新日期:2020-10-16
  • An exponential regulator for rapidity divergences
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-10-12
    Ye Li; Duff Neill; Hua Xing Zhu

    Finding an efficient and compelling regularization of soft and collinear degrees of freedom at the same invariant mass scale, but separated in rapidity is a persistent problem in high-energy factorization. In the course of a calculation, one encounters divergences unregulated by dimensional regularization, often called rapidity divergences. Once regulated, a general framework exists for their renormalization

    更新日期:2020-10-15
  • Reheating constraints to modulus mass for single field inflationary models
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-10-08
    Rajesh Goswami; Urjit A. Yajnik

    We consider string and supergravity motivated scenarios in which moduli fields dominate the energy density of the Universe in a post-inflationary epoch. For the case of a single light modulus it has been shown that considering the evolution of a specific scale from the time of its Hubble crossing during inflation to the present time, a relation can be obtained among the lightest modulus mass, the reheating

    更新日期:2020-10-13
  • How to choose master integrals
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-10-09
    A.V. Smirnov; V.A. Smirnov

    The standard procedure when evaluating integrals of a given family of Feynman integrals, corresponding to some Feynman graph, is to construct an algorithm which provides the possibility to write any particular integral as a linear combination of so-called master integrals. To do this, public (AIR, FIRE, REDUZE, LiteRed, KIRA) and private codes based on solving integration by parts relations are used

    更新日期:2020-10-13
  • Graded off-diagonal Bethe ansatz solution of the SU(2|2) spin chain model with generic integrable boundaries
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-10-01
    Xiaotian Xu; Junpeng Cao; Yi Qiao; Wen-Li Yang; Kangjie Shi; Yupeng Wang

    The graded off-diagonal Bethe ansatz method is proposed to study supersymmetric quantum integrable models (i.e., quantum integrable models associated with superalgebras). As an example, the exact solutions of the SU(2|2) vertex model with both periodic and generic open boundary conditions are constructed. By generalizing the fusion techniques to the supersymmetric case, a closed set of operator product

    更新日期:2020-10-12
  • QCD axion and neutrino physics induced by hidden flavor structure
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-10-06
    Y.H. Ahn; Xiaojun Bi

    We study the reasonable requirements of two anomalous U(1)s in a flavored-axion framework for the anomaly cancellations of both U(1)-mixed gravity and U(1)Y×[U(1)]2 which in turn determine the U(1)Y charges where U(1)Y is the hypercharge gauge symmetry of the standard model. We argue that, with a flavor symmetry group, axion-induced topology in symmetry-broken phases plays crucial roles in describing

    更新日期:2020-10-11
  • Exceptional unification of families and forces
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-10-06
    Alfredo Aranda; Francisco J. de Anda; Stephen F. King

    This work considers the remarkable suggestion that the three families of quarks and leptons may be unified, together with the Higgs and gauge fields of the Standard Model (SM), into a single “particle”, namely the 248 vector superfield of a ten-dimensional E8 super Yang Mills (SYM) theory. Towards a realistic model along these lines, a class of orbifoldings based on T6/(ZN×ZM) are proposed and explored

    更新日期:2020-10-11
  • Nonlinear Schrödinger type tetrahedron maps
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-10-02
    S. Konstantinou-Rizos

    This paper is concerned with the construction of new solutions in terms of birational maps to the functional tetrahedron equation and parametric tetrahedron equation. We present a method for constructing solutions to the parametric tetrahedron equation via Darboux transformations. In particular, we study matrix refactorisation problems for Darboux transformations associated with the nonlinear Schrödinger

    更新日期:2020-10-11
  • Dynamical Majorana Neutrino Masses and Axions I
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-10-10
    Jean Alexandre; Nick E. Mavromatos; Alex Soto

    We discuss dynamical mass generation for fermions and (string-inspired) pseudoscalar fields (axion-like particles (ALP)), in the context of effective theories containing Yukawa type interactions between the fermions and ALPs. We discuss both Hermitian and non-Hermitian Yukawa interactions, which are motivated in the context of some scenarios for radiative (anomalous) Majorana sterile neutrino masses

    更新日期:2020-10-11
  • Constraints on the quark mixing matrix with vector-like quarks
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-10-06
    Drona Vatsyayan; Anirban Kundu

    While a chiral fourth generation of quarks is almost ruled out from the data on Higgs boson production and decay at the Large Hadron Collider, vector-like quarks are still a feasible option to extend the fermionic sector of the Standard Model. Such an extension does not suffer from any anomalies and easily passes the constraints coming from oblique electroweak parameters. We consider such minimal extensions

    更新日期:2020-10-08
  • On the symmetry of TT¯ deformed CFT
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-09-30
    Miao He; Yi-hong Gao

    We propose a symmetry of TT¯ deformed 2D CFT, which preserves the trace relation. The deformed conformal killing equation is obtained. Once we consider the background metric runs with the deformation parameter μ, the deformation contributes an additional term in conformal killing equation, which plays the role of renormalization group flow of metric. The conformal symmetry coincides with the fixed

    更新日期:2020-10-07
  • Purely triplet seesaw and leptogenesis within cosmological bound, dark matter, and vacuum stability
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-09-29
    Mina Ketan Parida; Mainak Chakraborty; Swaraj Kumar Nanda; Riyanka Samantaray

    In a novel standard model extension it has been suggested that, even in the absence of right-handed neutrinos and type-I seesaw, purely triplet leptogenesis leading to baryon asymmetry of the universe can be realized by two heavy Higgs triplets which also provide type-II seesaw ansatz for neutrino masses. In this work we discuss this model predictions for hierarchical neutrino masses in concordance

    更新日期:2020-10-05
  • Revamped Bi-large neutrino mixing with Gatto-Sartori-Tonin like relation
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-09-30
    Subhankar Roy; K. Sashikanta Singh; Jyotirmoi Borah

    The Gatto Sartori Tonin (GST) relation which connects the Cabibbo angle and the quark mass ratio: θC=md/ms, is instituted as θ13=m1/m3 to a Bi-large motivated lepton mixing framework that relies on the unification of mixing parameters: θ13=θC and θ12=θ23. This modification, in addition to ruling out the possibility of vanishing θ13, advocates for a nonzero lowest neutrino mass and underlines the normal

    更新日期:2020-10-02
  • Spectral functions and dynamic critical behavior of relativistic Z2 theories
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-09-24
    Dominik Schweitzer; Sören Schlichting; Lorenz von Smekal

    We investigate the dynamic critical behavior of a relativistic scalar field theory with Z2 symmetry by calculating spectral functions of the order parameter at zero and non-vanishing momenta from first-principles classical-statistical lattice simulations in real-time. We find that at temperatures above the critical point (T>Tc), the spectral functions are well described by relativistic quasi-particle

    更新日期:2020-10-02
  • Electron-positron annihilation to photons at O(α3) revisited
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-09-23
    Roman N. Lee

    We apply the modern multiloop methods to the calculation of the total cross sections of electron-positron annihilation to 2 and 3 photons exactly in s/m2 with the accuracy O(α3). Examining the asymptotics of our results, we find agreement with Ref. [1] and discover mistakes in the results of Refs. [2], [3]. This mistake is due to the terms, omitted in differential cross section in Refs. [2], [3], which

    更新日期:2020-09-29
  • Entanglement of free Fermions on Hadamard graphs
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-09-17
    Nicolas Crampé; Krystal Guo; Luc Vinet

    Free Fermions on vertices of distance-regular graphs are considered. Bipartitions are defined by taking as one part all vertices at a given distance from a reference vertex. The ground state is constructed by filling all states below a certain energy. Borrowing concepts from time and band limiting problems, algebraic Heun operators and Terwilliger algebras, it is shown how to obtain, quite generally

    更新日期:2020-09-29
  • Particle-like, dyx-coaxial and trix-coaxial Lie algebra structures for a multi-dimensional continuous Toda type system
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-09-22
    Marcella Palese; Ekkehart Winterroth

    We prove that with a (2+1)-dimensional Toda type system are associated algebraic skeletons which are (compatible assemblings) of particle-like Lie algebras of dyons and triadons type. We obtain trix-coaxial and dyx-coaxial Lie algebra structures for the system from algebraic skeletons of some particular choice for compatible associated absolute parallelisms. In particular, by a first choice of the

    更新日期:2020-09-29
  • Hopf superpolynomial from topological vertices
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-09-23
    Andrei Mironov; Alexei Morozov

    Link/knot invariants are series with integer coefficients, and it is a long-standing problem to get them positive and possessing cohomological interpretation. Constructing positive “superpolynomials” is not straightforward, especially for colored invariants. A simpler alternative is a multi-parametric generalization of the character expansion, which leads to colored “hyperpolynomials”. The third construction

    更新日期:2020-09-29
  • Black remnants from T-duality
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-09-23
    Behnam Pourhassan; Salman Sajad Wani; Mir Faizal

    In this paper, we will analyze the physical consequences of black remnants, which form due to non-perturbative string theoretical effects. These non-perturbative effects occur due to the T-duality in string theory. We will analyze the production of such black remnants in models with large extra dimensions, and demonstrate that these non-perturbative effects can explain the absence of mini black holes

    更新日期:2020-09-29
  • Tunable Kondo screening length at a Y-junction of three inhomogeneous spin chains
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-09-23
    Domenico Giuliano; Andrea Nava; Pasquale Sodano

    We derive the topological Kondo Hamiltonian describing a Y junction of three XX-spin chains connected to outer quantum Ising chains with different tilting angles for the Ising axis. We show that the tilting angles in the spin models play the role of the phases of the superconducting order parameters at the interfaces between bulk superconductors and one-dimensional conducting normal electronic wires

    更新日期:2020-09-29
  • Entropic c–functions in TT‾,JT‾,TJ‾ deformations
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-09-21
    Meseret Asrat

    We study the holographic entanglement entropy of an interval in a quantum field theory obtained by deforming a holographic two–dimensional conformal field theory via a general linear combination of irrelevant operators that are closely related to, but nonetheless distinct from, TT‾, JT‾ and TJ‾, and compute the Casin–Huerta entropic c–function. In the ultraviolet, for a particular combination of the

    更新日期:2020-09-28
  • The genus two free boson in Arakelov geometry
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-09-21
    Thomas Vandermeulen

    Using Arakelov geometry, we compute the partition function of the noncompact free boson at genus two. We begin by compiling a list of modular invariants which appear in the Arakelov theory of Riemann surfaces. Using these quantities, we express the genus two partition function as a product of modular forms, as in the well-known genus one case. We check that our result has the expected obstruction to

    更新日期:2020-09-28
  • Instability and no-hair paradigm in d-dimensional charged-AdS black holes
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-09-21
    Afsaneh Rahmani; Mohsen Khodadi; Matin Honardoost; Hamid Reza Sepangi

    Is it possible the no-hair paradigm is violated when a black hole undergoes an instability? Employing massless charged scalar perturbations, we address this question within the context of conformally invariant Einstein-Maxwell theory for some allowed d-dimensional (d=4n+4 with conformal parameter n=0,1,2,...) topological small AdS black-holes. We provide numerical analyses that show the non trivial

    更新日期:2020-09-28
  • Path integral calculation of heat kernel traces with first order operator insertions
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-09-21
    Fiorenzo Bastianelli; Francesco Comberiati

    We study generalized heat kernel coefficients, which appear in the trace of the heat kernel with an insertion of a first-order differential operator, by using a path integral representation. These coefficients may be used to study gravitational anomalies, i.e. anomalies in the conservation of the stress tensor. We use the path integral method to compute the coefficients related to the gravitational

    更新日期:2020-09-28
  • Fundamental properties of the proton in light-front zero modes
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-09-21
    Xiangdong Ji

    For a proton in the infinite momentum frame, its wave function contains a zero-momentum part (light-front zero-modes) originated from the modification of the QCD vacuum in the presence of the valence quarks, exhibiting a light-front long-range order in the quantum state. This “non-travelling” component of the proton contributes to its fundamental properties, including the mass and spin, as well as

    更新日期:2020-09-25
  • Orientifold limits of singular F-theory vacua
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-09-18
    James Fullwood; Dongxu Wang

    We construct global orientifold limits of singular F-theory vacua whose associated gauge groups are SO(3), SO(5), SO(6), F4, SU(4), and Spin(7). For each limit we show a universal tadpole relation is satisfied, which is a homological identity whose dimension-zero component encodes the matching of the D3 charge between each F-theory compactification and its orientifold limit. While for smooth F-theory

    更新日期:2020-09-25
  • Accidental symmetries in the 2HDMEFT
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-09-16
    Callum Birch-Sykes; Neda Darvishi; Yvonne Peters; Apostolos Pilaftsis

    We construct accidentally symmetric potentials in the framework of Two Higgs Model Effective Field Theory (2HDMEFT) including higher-order operators of dimension 6 and dimension 8. Our construction is facilitated by an earlier developed technique based on prime invariants. In addition, we employ an alternative method that utilises the generators of each symmetry in the bi-adjoint representation and

    更新日期:2020-09-23
  • Multiplicity-free Uq(slN) 6-j symbols: Relations, asymptotics, symmetries
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-09-09
    Victor Alekseev; Andrey Morozov; Alexey Sleptsov

    A closed form expression for multiplicity-free quantum 6-j symbols (MFS) was proposed in [1] for symmetric representations of Uq(slN), which are the simplest class of multiplicity-free representations. In this paper we rewrite this expression in terms of q-hypergeometric series Φ34. We claim that it is possible to express any MFS through the 6-j symbol for Uq(sl2) with a certain factor. It gives us

    更新日期:2020-09-22
  • Bethe strings in the dynamical structure factor of the spin-1/2 Heisenberg XXX chain
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-09-17
    José M.P. Carmelo; Tilen Čadež; Pedro D. Sacramento

    Recently there has been a renewed interest in the spectra and role in dynamical properties of excited states of the spin-1/2 Heisenberg antiferromagnetic chain in longitudinal magnetic fields associated with Bethe strings. The latter are bound states of elementary magnetic excitations described by Bethe-ansatz complex non-real rapidities. Previous studies on this problem referred to finite-size systems

    更新日期:2020-09-22
  • The large N limit of SU(N) integrals in lattice models
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-09-16
    O. Borisenko; V. Chelnokov; S. Voloshyn

    The standard U(N) and SU(N) integrals are calculated in the large N limit. Our main finding is that for an important class of integrals this limit is different for two groups. We describe the critical behaviour of SU(N) models and discuss implications of our results for the large N behaviour of SU(N) lattice gauge theories at finite temperatures and non-zero baryon chemical potential. The key ingredients

    更新日期:2020-09-22
  • Lattice walk area combinatorics, some remarkable trigonometric sums and Apéry-like numbers
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-09-18
    Stéphane Ouvry; Alexios P. Polychronakos

    Explicit algebraic area enumeration formulae are derived for various lattice walks generalizing the canonical square lattice walks, and in particular for the triangular lattice chiral walks recently introduced by the authors. A key element in the enumeration is the derivation of some identities involving some remarkable trigonometric sums –which are also important building blocks of non trivial quantum

    更新日期:2020-09-22
  • Towards a Swampland Global Symmetry Conjecture using weak gravity
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-09-14
    Tristan Daus; Arthur Hebecker; Sascha Leonhardt; John March-Russell

    It is widely believed and in part established that exact global symmetries are inconsistent with quantum gravity. One then expects that approximate global symmetries can be quantitatively constrained by quantum gravity or swampland arguments. We provide such a bound for an important class of global symmetries: Those arising from a gauged U(1) with the vector made massive via Higgsing with an axion

    更新日期:2020-09-20
  • Twisted differential K-characters and D-branes
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-09-14
    Fabio Ferrari Ruffino; Juan Carlos Rocha Barriga

    We analyse in detail the language of partially non-abelian Deligne cohomology and of twisted differential K-theory, in order to describe the geometry of type II superstring backgrounds with D-branes. This description will also provide the opportunity to show some mathematical results of independent interest. In particular, we begin classifying the possible gauge theories on a D-brane or on a stack

    更新日期:2020-09-20
  • Supersymmetric indices on I × T2, elliptic genera and dualities with boundaries
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-09-15
    Katsuyuki Sugiyama; Yutaka Yoshida

    We study three dimensional N=2 supersymmetric theories on I×M2 with 2d N=(0,2) boundary conditions at the boundaries ∂(I×M2)=M2⊔M2, where M2=C or T2. We introduce supersymmetric indices of three dimensional N=2 theories on I×T2 that couple to elliptic genera of 2d N=(0,2) theories at the two boundaries. We evaluate the I×T2 indices in terms of supersymmetric localization and study dualities on the

    更新日期:2020-09-20
  • Equivalent transformations, bifurcations and exact solutions to a class of variable-coefficient PDE
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-09-16
    Hanze Liu; Lijun Zhang; Xuexia Li; Lina Chang

    In this paper, the equivalent transformations (ETs) of the generalized variable-coefficient KdV (vc-KdV) types of equations are constructed, so these variable-coefficient partial differential equations (vc-PDEs) are transformed into constant-coefficient partial differential equations (cc-PDEs) under some conditions, the vc-KdV and vc-mKdV equations are transformed into classical KdV and mKdV equations

    更新日期:2020-09-20
  • Affine Yangian and 3-Schur functions
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-09-16
    Na Wang

    3D (3 dimensional) Young diagram is a generalization of 2D Young diagram. In this paper, from the orthogonality of 3D Young diagrams and the properties in affine Yangian and its MacMahon representation, we obtain the Schur functions corresponding to 3D Young diagrams, which are called 3-Schur functions. 3-Schur functions are a generalization of Schur functions in the sense that when h1=1,h2=−1,h3=0

    更新日期:2020-09-20
  • Regular Bardeen AdS black hole as a heat engine
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-09-11
    K.V. Rajani; C.L. Ahmed Rizwan; A. Naveena Kumara; Deepak Vaid; K.M. Ajith

    We investigate the thermodynamic phase transition and heat engine efficiency in regular Bardeen AdS black hole. The thermodynamics of the black hole is analyzed in extended phase space. A first order phase transition analogous to van der Waal system is evident from this study, which is affirmed by the specific heat divergence at the critical points. A conventional heat engine is constructed by considering

    更新日期:2020-09-18
  • Lemaître-Tolman-Bondi static universe in Rastall-like gravity
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-09-17
    Zhong-Xi Yu; Shou-Long Li; Hao Wei

    In this work, we try to obtain a stable Lemaître-Tolman-Bondi (LTB) static universe, which is spherically symmetric and radially inhomogeneous. However, this is not an easy task, and fails in general relativity (GR) and various modified gravity theories, because the corresponding LTB static universes must reduce to the Friedmann-Robertson-Walker (FRW) static universes. We find a way out in a new type

    更新日期:2020-09-18
  • Holographic unitary renormalization group for correlated electrons - I: A tensor network approach
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-09-17
    Anirban Mukherjee; Siddhartha Lal

    We present a unified framework for the renormalisation of the Hamiltonian and eigenbasis of a system of correlated electrons, unveiling thereby the interplay between electronic correlations and many-particle entanglement. For this, we extend substantially the unitary renormalization group (URG) scheme introduced in Refs. [1], [2], [3]. We recast the RG as a discrete flow of the Hamiltonian tensor network

    更新日期:2020-09-18
  • Thermodynamics and weak cosmic censorship conjecture in the Kerr-AdS black hole
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-09-10
    Xiao-Xiong Zeng; Hai-Qing Zhang

    We investigate the laws of thermodynamics and weak cosmic censorship conjecture in the normal and extended phase space of a Kerr-AdS black hole by analyzing the energy-momentum relation of the absorbed fermion dropping into the horizon. In the normal phase space, the first law, second law as well as the weak cosmic censorship conjecture are found to be valid in all the initial states of the black hole

    更新日期:2020-09-11
  • Holographic unitary renormalization group for correlated electrons - II: insights on fermionic criticality
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-09-10
    Anirban Mukherjee; Siddhartha Lal

    Capturing the interplay between electronic correlations and many-particle entanglement requires a unified framework for Hamiltonian and eigenbasis renormalization. In this work, we apply the unitary renormalization group (URG) scheme developed in a companion work [1] to the study of two archetypal models of strongly correlated lattice electrons, one with translation invariance and one without. We obtain

    更新日期:2020-09-10
  • New physics probes: Atomic parity violation, polarized electron scattering and neutrino-nucleus coherent scattering
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-08-27
    Giorgio Arcadi; Manfred Lindner; Jessica Martins; Farinaldo S. Queiroz

    Atomic Parity Violation (APV) is usually quantified in terms of the weak nuclear charge QW of a nucleus, which depends on the coupling strength between the atomic electrons and quarks. In this work, we review the importance of APV to probing new physics using effective field theory. Furthermore, we correlate our findings with the results from neutrino-nucleus coherent scattering. We revisit signs of

    更新日期:2020-09-09
  • Bottom-up reconstruction of non-singular bounce in F(R) gravity from observational indices
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-09-01
    S.D. Odintsov; V.K. Oikonomou; Tanmoy Paul

    We apply the bottom-up reconstruction technique in the context of bouncing cosmology in F(R) gravity, where the starting point is a suitable ansatz of observable quantity (like spectral index or tensor to scalar ratio) rather than a priori form of Hubble parameter. In inflationary scenario, the slow roll conditions are assumed to hold true, and thus the observational indices have general expressions

    更新日期:2020-09-05
  • Holographic RG and exact RG in O(N) model
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-08-17
    B. Sathiapalan

    In this paper an Exact Renormalization Group (ERG) equation is written for the critical O(N) model in D-dimensions (with D≈3) at the Wilson-Fisher fixed point perturbed by a scalar composite operator. The action is written in terms of an auxiliary scalar field and reproduces correlation functions of a scalar composite operator. The equation is derived starting from the Polchinski ERG equation for the

    更新日期:2020-09-05
  • Renormalization of higher-dimensional operators from on-shell amplitudes
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-08-31
    Pietro Baratella; Clara Fernandez; Alex Pomarol

    On-shell amplitude methods allow to derive one-loop renormalization effects from just tree-level amplitudes, with no need of loop calculations. We derive a simple formula to obtain the anomalous dimensions of higher-dimensional operators from a product of tree-level amplitudes. We show how this works for dimension-6 operators of the Standard Model, providing explicit examples of the simplicity, elegance

    更新日期:2020-09-03
  • Probing single stop production at the FCC-hh/SPPC
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-09-02
    Tian-Peng Tang; Hang Zhou; Ning Liu

    Top squark (stop) is a crucial part of supersymmetric models (SUSY) to understand the naturalness problem. Other than the traditional stop pair production, the single production via electroweak interaction provides signals with distinctive features which could help confirm the existence of the top squark. In this paper, we investigate the observability of stop through the mono-top channel of the single

    更新日期:2020-09-03
  • On SO(N) spin vertex models
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-09-02
    Vladimir Belavin; Doron Gepner; Hans Wenzl

    We describe the Boltzmann weights of the Dk algebra spin vertex models. Thus, we find the SO(N) spin vertex models, for any N, completing the Bk case found earlier. We further check that the real (self–dual) SO(N) models obey quantum algebras, which are the Birman–Murakami–Wenzl (BMW) algebra for three blocks, and certain generalizations, which include the BMW algebra as a sub–algebra, for four and

    更新日期:2020-09-03
  • Multicomponent dark matter in the light of CALET and DAMPE
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-08-26
    Chao-Qiang Geng; Da Huang; Lu Yin

    In the light of the latest measurements on the total e++e− flux by CALET and DAMPE experiments, we revisit the multicomponent leptonically decaying dark matter (DM) explanations to the cosmic-ray electron/positron excesses observed previously. Especially, we use the single and double-component DM models to explore the compatibility of the AMS-02 positron fraction with the new CALET or DAMPE data. As

    更新日期:2020-09-02
  • A comparative study of the anomalous tHq couplings via the diphoton channel at the LHC
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-08-28
    Jie-Fen Shen; Yan-Ju Zhang

    We present a comparative study about the flavor changing neutral Higgs (FCNH) interactions of top quark, i.e., tqh (q=u,c), from two processes with the h→γγ decay channel: top quark pair production pp→tt¯ with one top decaying to hq, and the anomalous single top plus Higgs production process pp→th. We perform a full simulation for the signals and the relevant SM backgrounds based on two separate cut

    更新日期:2020-09-02
  • Dirac dark matter in U(1)B−L with the Stueckelberg mechanism
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-08-26
    Chengcheng Han; M.L. López-Ibáñez; Bo Peng; Jin Min Yang

    We investigate a U(1)B−L gauge extension of the Standard Model (SM) where the gauge boson mass is generated by the Stueckelberg mechanism. Three right-handed neutrinos are added to cancel the gauge anomaly and hence the neutrino masses can be explained. A new Dirac fermion could be a WIMP dark matter whose interaction with the SM sector is mediated by the new gauge boson. Assuming the perturbativity

    更新日期:2020-09-02
  • Emergent geometry in recursive renormalization group transformations
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-08-20
    Ki-Seok Kim

    Holographic duality conjecture has been proposed to be a novel non-perturbative theoretical framework for the description of strongly correlated electrons. However, the duality transformation is not specified to cause ambiguity in the application of this theoretical machinery to condensed matter physics. In this study, we propose a prescription for the holographic duality transformation. Based on recursive

    更新日期:2020-09-02
  • Casimir effect in Snyder space
    Nucl. Phys. B (IF 2.817) Pub Date : 2020-08-26
    S.A. Franchino-Viñas; S. Mignemi

    We show that two indistinguishable aspects of the divergences occurring in the Casimir effect, namely the divergence of the energy of the higher modes and the non-compactness of the momentum space, get disentangled in a given noncommutative setup. To this end, we consider a scalar field between two parallel plates in an anti-Snyder space. Additionally, the large mass decay in this noncommutative setup

    更新日期:2020-09-02
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