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.

⚛️ high-energy theory

Timelike Entanglement Signatures of Ergodicity and Spectral Chaos

This paper demonstrates that timelike entanglement measures derived from the spacetime density kernel in the Rosenzweig-Porter model, including Tsallis entropy, imagitivity, and a newly defined kernel negativity, serve as sharp diagnostics for distinguishing between ergodic, fractal, and localized phases by exhibiting distinct growth patterns, spectral form factor-like structures, and correlations with fractal dimensions.

Rathindra Nath Das, Arnab Kundu, Nemai Chandra Sarkar2026-01-29
⚛️ general relativity

Topological defects and scalar field modes in cosmological backgrounds

This paper investigates topological defects in higher-dimensional cosmological backgrounds by deriving the complete set of mode functions for a massive scalar field with general curvature coupling, expressing their angular components via associated Legendre functions and analyzing specific time-dependent behaviors in de Sitter and Milne universes.

A. A. Saharian, G. V. Mirzoyan, G. H. Harutyunyan, R. M. Avagyan2026-01-29
⚛️ high-energy theory

Uniqueness of Galilean and Carrollian limits of gravitational theories and application to higher derivative gravity

This paper establishes the equivalence of various methods for deriving Galilean and Carrollian gravitational limits, enabling the construction of a generic algorithm to expand any finite-order metric theory of gravity into these non-Lorentzian regimes and identifying the conditions under which such theories simultaneously modify General Relativity in both limits.

Poula Tadros, Ivan Kolář2026-01-28
⚛️ nuclear theory

Relaxation time approximation revisited and non-analytical structure in retarded correlators

This paper provides a rigorous mathematical justification for the energy-independent relaxation time approximation in hard interactions, proposes a method to restore collision invariance, and elucidates how interaction types (hard versus soft) and physical parameters determine the non-analytical structures, such as hydrodynamic poles or gapless branch-cuts, in retarded correlators.

Jin Hu2026-01-28
⚛️ high-energy theory

Love symmetry in higher-dimensional rotating black hole spacetimes

This paper develops a method to construct a one-parameter family of globally-defined Love symmetry generators for rotating black holes in arbitrary dimensions by matching the near-horizon Klein-Gordon operator to an SL(2,R)SL(2,\mathbb{R}) Casimir, a framework that successfully recovers known 4D and 5D cases and demonstrates the separability of the massive scalar wave equation in generalized Lense-Thirring spacetimes using both Myers-Perry and Painlevé-Gullstrand coordinates.

Finnian Gray, Cynthia Keeler, David Kubiznak, Victoria Martin2026-01-28