Nuclear Physics B

We study the spin-flavor precession of neutrinos in a magnetic field within the quantum field theory approach in which neutrinos are virtual particles. Neutrinos are taken to be Majorana particles having a nonzero transition magnetic moment. We derive the dressed propagators of the neutrino mass eigenstates exactly accounting for the magnetic field contribution. The matrix element and the transit…

In this paper, we examine the behavior of the charged compact star model PSR J0740+6620. To achieve this, we solve the Einstein field equations within an anisotropic framework. We model the star’s structure using a Gaussian density profile. Our analysis focuses on assessing the stability of the star and verifying whether its physical properties are consistent with the conditions required for equi…

In this work, we investigate the viable bouncing cosmological solutions in the framework of f ( Q, L m ) gravity, which incorporates the coupling between the non-metricity scalar ( Q ) and the matter-Lagrangian ( L m ). We take into consideration a Bianchi type-I spacetime with an isotropic matter distribution to examine the implications of this framework on the dynamics of the early cosmos. Two …

The Hilbert-Schmidt measure is a useful geometric tool used to investigate the properties on the manifold of mixed Gaussian states in multimode continuous variable quantum systems. In this work, we study the relationship between the scalar curvature and quantum entanglement across causally disconnected regions (open charts) in de Sitter spacetime. We first consider a two-mode squeezed state share…

The main objective of this work is to explore the theoretical existence of traversable wormholes in Rastall teleparallel theory under the matter source described by solitonic quantum wave and Navarro-Frenk-White density profiles. We utilize the Morris-Thorne geometric setup to describe the wormhole geometry, from which the anisotropic field equations are obtained in terms of the torsion scalar. U…

We introduce and study a new solution describing a static, spherically symmetric and electrically charged black hole embedded in a charged quintessence fluid, which corresponds to an electric generalization of the Kiselev geometry. We derive the effective potential and analyze the various types of orbits followed by charged particles. A special attention is given to circular orbits and their stab…

Recent studies have increasingly applied Tsallis nonextensive statistics to Quantum Chromodynamics (QCD) to account for deviations from thermal equilibrium. Within this framework, the Tsallis parameter q characterizes long-range interactions, non-Markovian memory, and multifractal boundary effects; it links directly to temperature variances in fluctuating systems, which vanish in the Boltzmann-Gi…

In this study, we explore the thermodynamics, massless-particle motion, photon sphere, shadow, and gravitational weak lensing of Schwarzschild BHs embedded in a Hernquist dark matter halo, surrounded by a quintessential field. The spacetime metric is constructed using a modified lapse function incorporating the Schwarzschild term, the Hernquist density profile parameterized by ρ s and r s , and t…

We derive decomposition formulas for supercharacters of quantum affine ortho-symplectic superalgebras and twisted quantum affine superalgebras into supercharacters of their finite-type quantum sub-superalgebras, by employing Cauchy-type identities for supersymmetric Schur functions. These formulas are obtained via a folding (reduction) procedure applied to the supercharacters of the finite-dimens…

The electromagnetic production of a dilepton pair in the muon-ion scattering, usually denoted muon trident process, is investigated considering the feasibility of studying processes induced by muons at LHC using its far-forward detectors. The total and differential cross-sections are estimated taking into account of the Bethe-Heitler and bremsstrahlung channels, and predictions for the event rate…