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.

⚛️ general relativity

Celestial Lw1+Lw_{1+\infty} Symmetries and Subleading Phase Space of Null Hypersurfaces

This paper establishes a correspondence between the gravitational phase space at null infinity and the subleading phase space around finite-distance null hypersurfaces using the Newman-Penrose formalism, thereby identifying celestial Lw1+Lw_{1+\infty} symmetries, defining covariant radiation, and revealing an infinite tower of conserved charges relevant to observers near black hole or cosmological horizons.

Romain Ruzziconi, Céline Zwikel2026-03-04
⚛️ quantum physics

Entanglement and correlations between local observables in de Sitter spacetime

Challenging previous conclusions that curvature enhances entanglement, this paper demonstrates that while increasing curvature in de Sitter spacetime strengthens correlations between local field modes, it paradoxically decreases their entanglement, revealing a qualitative alteration of the vacuum's entanglement structure by the cosmological constant.

Patricia Ribes-Metidieri, Ivan Agullo, Béatrice Bonga2026-03-04
⚛️ phenomenology

PP--VV criticality, Joule--Thomson expansion, and holographic heat engine of charged Hayward-AdS black holes with a cloud of strings and perfect fluid dark matter

This paper investigates the extended thermodynamics of charged Hayward-AdS black holes surrounded by a cloud of strings and perfect fluid dark matter, demonstrating that these models exhibit van der Waals-like phase transitions, distinct Joule-Thomson expansion characteristics, and holographic heat engine efficiencies that are respectively enhanced by the cloud of strings and diminished by perfect fluid dark matter.

Ahmad Al-Badawi, Faizuddin Ahmed, İzzet Sakallı2026-03-04
⚛️ quantum physics

Quantum regression theorem in the Unruh-DeWitt battery

This paper analytically investigates an Unruh-DeWitt detector acting as a relativistic quantum battery in Rindler spacetime by employing the quantum regression theorem to derive its master equation, solve for single- and two-time correlation functions, and demonstrate how acceleration enhances spontaneous emission dissipation and shapes the emission spectrum into a Lorentzian profile.

Manjari Dutta, Arnab Mukherjee, Sunandan Gangopadhyay2026-03-04
🔢 mathematics

Perturbative semiclassical entropy of dynamical black holes

This paper demonstrates that by incorporating gravitational constraints and a boundary charge into the algebra of observables on a dynamical black hole horizon, one can construct a Type-II\text{II}_{\infty} von Neumann factor whose entropy satisfies a first law of thermodynamics and is directly related to the Hollands-Wald-Zhang entropy of perturbed black holes via horizon and null infinity fluxes.

Avinandan Mondal, Kartik Prabhu2026-03-04