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.

Limits on the Statistical Description of Charged de Sitter Black Holes

This paper resolves thermodynamic ambiguities in four-dimensional charged de Sitter black holes by adopting a Bousso-Hawking normalization relative to a freely-falling observer, revealing that while the near-extremal Nariai limit avoids a breakdown of the semi-classical description due to finite heat capacity, fundamental statistical limitations persist in the cold and ultracold regimes where the heat capacity vanishes.

Lars Aalsma, Puxin Lin, Jan Pieter van der Schaar, Gary Shiu, Watse Sybesma2026-04-20⚛️ hep-th

Carrier-envelope phase and pulse shape effects on vacuum pair production in asymmetric electric fields with bell-shaped envelopes

This study demonstrates that the carrier-envelope phase and pulse shape of asymmetric electric fields significantly influence electron-positron pair production, with specific configurations capable of enhancing pair density by two to three orders of magnitude through multiphoton dominance and optimized envelope steepness.

Abhinav Jangir, Anees Ahmed2026-04-20⚛️ hep-ph

Geometric entropy and time-like entanglement entropy on a rotating BTZ black hole

This paper analyzes the double Wick rotation of a rotating BTZ black hole to derive a dual transition matrix with an imaginary chemical potential, demonstrating that geometric and time-like entanglement entropies can be reproduced through specific coordinate identifications and defining a new Lorentzian entanglement growth based on the linear growth coefficient of the time-like entropy.

Huayu Dai, Xi-Hao Fang, Mitsutoshi Fujita, Song He2026-04-20⚛️ hep-th

Dirac-Bergmann analysis of SW-mapped non-commutative U(1)U(1) electrodynamics with external currents

This paper employs the Dirac-Bergmann algorithm to demonstrate that introducing fixed external currents into Seiberg-Witten mapped non-commutative U(1)U(1) electrodynamics creates a source-compatibility obstruction located within the Dirac constraint chain, which typically resolves by fixing the primary multiplier rather than generating new constraints, thereby limiting a complete reduced-phase-space analysis to specific first-class subcases.

J. Manuel Cabrera, A. G. Andarcia Caballero, J. M. Paulin Fuentes2026-04-20⚛️ hep-th