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.

⚛️ phenomenology

A quantum information method for early universe with non-trivial sound speed

This study employs open quantum system methods and Arnoldi iterations to analyze Krylov complexity and entropy in the early universe, revealing that while non-trivial sound speed yields similar complexity trends to the standard case, it induces distinct entropy evolution and maximally chaotic behavior characterized by specific Lanczos coefficients.

Shi-Cheng Liu, Lei-Hua Liu, Bichu Li, Hai-Qing Zhang, Peng-Zhang He2026-02-27
⚛️ high-energy theory

Zoo of flows in a 3d gauged supergravity with periodic potential

This paper constructs AdS/dS asymptotic solutions in 3d gauged supergravity with a periodic potential, interpreting them as holographic deformations of 2d CFTs by irrelevant operators, while analyzing their finite-temperature singular black string geometries and demonstrating the factorization of the TTT\overline{T} operator along the holographic RG flow.

Lev Astrakhantsev, Anastasia A. Golubtsova, Mikhail A. Podoinitsyn2026-02-27
⚛️ high-energy theory

Local approximations of global Hamiltonian from inclusion of algebras

This paper proposes local approximations of the global Minkowski Hamiltonian in quantum field theory by expressing the finite-volume conformal field theory Hamiltonian in terms of the modular Hamiltonian of a local ball-shaped region, utilizing operator-algebraic nuclearity and characteristic functions of algebra inclusions to construct these regulators.

Yidong Chen, Nima Lashkari, Kwing Lam Leung2026-02-27