hep-th

Renormalizable and unitary nonlocal quantum field theory with CPT violation and its implication

This paper presents the first example of a nonlocal, Lorentz-invariant quantum field theory that simultaneously satisfies renormalizability, unitarity, and causality while violating CPT symmetry, offering a viable framework for explaining the universe's baryon asymmetry.

A self-consistent calculation of non-spherical Bose-Einstein correlation functions with Coulomb final-state interaction

This paper presents a self-consistent generalization of a novel method for calculating three-dimensional Bose-Einstein correlation functions with Coulomb final-state interactions to non-spherical source functions, thereby validating previous spherical approximations and providing a new software package for these computations.

Bayesian Constraints on the Neutron Star Equation of State with a Smooth Hadron-Quark Crossover

This paper employs Bayesian inference within a unified framework to constrain the neutron star equation of state across hadronic, crossover, and quark phases, revealing that current multi-messenger data strongly limit low-to-intermediate density nuclear symmetry energy parameters while leaving high-density quark matter properties largely unconstrained until next-generation observations become available.

Asymmetric orbifolds with vanishing one-loop vacuum energy

This paper systematically classifies and constructs non-supersymmetric type II toroidal asymmetric orbifolds with finite Abelian and non-Abelian point groups that achieve vanishing one-loop vacuum energy through sector-wise supercharge conservation, despite the explicit breaking of spacetime supersymmetry.

Cancellation of one-parameter graviton gauge dependence in the effective scalar field equation in de Sitter

This paper demonstrates that the gauge dependence of one-graviton-loop corrections to the effective field equation of a massless, minimally coupled scalar in de Sitter space cancels out when contributions from all diagram classes, including one-loop corrections to external mode functions, are consistently collected, thereby supporting the construction of gauge-independent cosmological quantum-gravitational observables.

Elliptic Ruijsenaars-Toda and elliptic Toda chains: classical r-matrix structure and relation to XYZ chain

This paper demonstrates that the classical elliptic Toda and Ruijsenaars-Toda chains are specific cases of the elliptic Ruijsenaars chain, derives their classical $r$-matrix structures, and establishes their gauge equivalence to discrete Landau-Lifshitz and XYZ spin chain models.

Supersymmetry, Supergravity and Non--Perturbative Dynamics of Gauge Theories

This paper provides a comprehensive review of supersymmetry, supergravity, and non-perturbative gauge theory dynamics, tracing the theoretical framework from fundamental algebraic structures and the Seiberg-Witten solution to string theory applications and a detailed analysis of the KKLT moduli stabilisation mechanism in the context of de Sitter vacua and the swampland conjecture.

The emergence of (3+1)-dimensional expanding spacetime from complex Langevin simulations of the Lorentzian type IIB matrix model with deformations

Greybody Factor, Resonant Frequencies, and Entropy Quantization of Charged Scalar Fields in the Kerr-EMDA Black Hole

This paper investigates charged massive scalar field perturbations on the Kerr-EMDA black hole background by deriving exact analytical solutions in terms of confluent Heun functions to determine a mass-dependent resonant frequency spectrum, a parameter-dependent entropy quantization that diverges at extremality, and the first closed-form greybody factor for this geometry, thereby revealing how electromagnetic coupling and dilaton deformation fundamentally alter the black hole's wave scattering and thermodynamic properties compared to standard Kerr and Kerr-Newman cases.

Mutual Information from Modular Flow in General CFTs

This paper establishes a new high-precision analytic approximation for the vacuum mutual information in arbitrary $d$-dimensional conformal field theories by leveraging modular flow and twist operator contributions from primary fields, a method validated against known results and applied to previously unsolved cases like the $d=4$ Maxwell field.