Hep-Th, or high-energy theoretical physics, explores the fundamental building blocks of our universe and the forces that govern them. Researchers in this field use complex mathematics to understand everything from subatomic particles to the behavior of black holes, often pushing the boundaries of what we know about space and time.

At Gist.Science, we monitor the arXiv repository to ensure you stay ahead of the curve in this rapidly evolving discipline. For every new preprint uploaded to arXiv under this category, our team generates both accessible plain-language overviews and detailed technical summaries, making cutting-edge research understandable regardless of your background.

Below are the latest papers in high-energy theoretical physics, curated to help you navigate the most significant recent discoveries.

Thermodynamics of analogue black holes in a non-Hermitian tight-binding model

This paper proposes a non-Hermitian tight-binding model with gain/loss and non-reciprocal hopping that emulates black-hole physics by mapping a 1D lattice interface to a Schwarzschild metric, enabling the theoretical calculation of Hawking radiation, temperature, entropy, and mass, along with a proposed experimental realization for detecting these elusive features.

D. F. Munoz-Arboleda, M. Stålhammar, C. Morais Smith2026-04-01🔬 cond-mat.mes-hall

Kinetic theory for a relativistic charged gas: mathematical foundations of the hydrodynamic limit and first-order results within the projection method

This paper establishes the mathematical foundations for deriving first-order constitutive equations of a relativistic charged gas by applying a generalized projection method within the Chapman-Enskog expansion, arguing that the trace-fixed particle frame yields a causal, stable, and strongly hyperbolic fluid theory with frame-independent transport coefficients.

Carlos Gabarrete, Ana Laura García-Perciante, Olivier Sarbach2026-04-01⚛️ gr-qc

Dynamics of Cosmic Superstrings and the Overshoot Problem

This paper employs dynamical systems analysis to demonstrate that an initial population of NS5-brane wrapped strings can resolve the cosmological overshoot problem for the volume modulus by transferring energy to it, while simultaneously predicting a potentially detectable gravitational wave signal from the resulting high energy density of cosmic superstrings during modulus oscillations.

Luca Brunelli, Michele Cicoli, Francisco Gil Pedro2026-04-01⚛️ hep-th

NJL-Chiral Soliton and the Nucleon Equation of State at supra-saturation density: Impact of Chiral Symmetry Restoration

This paper proposes a method to construct the equation of state for supra-saturation density nuclear matter by modeling nucleons as topological solitons within a bosonized Nambu-Jona-Lasinio framework, demonstrating that the dynamical restoration of chiral symmetry leads to a stiffened equation of state compatible with neutron star observations.

Bikram Keshari Pradhan, Guy Chanfray, Hubert Hansen, Jérôme Margueron2026-04-01⚛️ nucl-th

Medium separation scheme effects on the magnetized and cold two-flavor superconducting quark matter

This study demonstrates that applying the Medium Separation Scheme (MSS) alongside Magnetic Field Independent Regularization (MFIR) to the Nambu--Jona-Lasinio model of magnetized two-flavor color superconducting quark matter eliminates unphysical oscillations and ensures positive magnetization, thereby correcting artifacts found in traditional approaches that fail to properly separate medium effects from vacuum contributions.

Francisco X. Azeredo, Dyana C. Duarte, Ricardo L. S. Farias2026-04-01⚛️ hep-lat