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.

🔭 astrophysics

Quantitative classicality in cosmological interactions during inflation

This paper quantifies the classicality of inflationary perturbations by analyzing on-shell and off-shell contributions to the bispectrum, demonstrating that non-linear interactions can be accurately described by classical evolution even prior to horizon crossing and establishing criteria for the validity of stochastic inflation approximations.

Yoann L. Launay, Gerasimos I. Rigopoulos, E. Paul S. Shellard2026-06-09
🔭 astrophysics

Bunch-Davies initial conditions and non-perturbative inflationary dynamics in Numerical Relativity

This paper demonstrates the feasibility of performing high-precision, fully non-linear Numerical Relativity simulations of cosmological inflation by employing Bunch-Davies initial conditions that satisfy General Relativity constraints, thereby validating standard perturbation theory in the linear regime and quantifying strongly non-linear dynamics in complex scenarios.

Yoann L. Launay, Gerasimos I. Rigopoulos, E. Paul S. Shellard2026-06-09
⚛️ high-energy theory

Nilpotent cohomological Hall algebras of surfaces

This paper establishes a framework for cohomological Hall algebras associated with coherent sheaves supported on a fixed curve within a smooth surface, constructing a generalized moduli stack and defining a functorial algebra that depends only on the formal neighborhood of the curve to study Hecke operators and resolve questions regarding Kleinian singularities.

Duiliu-Emanuel Diaconescu, Mauro Porta, Francesco Sala, Olivier Schiffmann, Eric Vasserot2026-06-09
⚛️ high-energy theory

c-Theorem and improvement in non-compact conformal field theories

This paper investigates how improvement ambiguities in the energy-momentum tensor affect Zamolodchikov's c-function in non-compact conformal field theories, revealing that while the c-function can become unbounded and non-monotonic due to IR divergences, a specific sum rule proposed by Hartman and Mathys remains robust and correctly yields the effective Virasoro central charge when the IR theory is gapped.

Nanami Nakamura, Yu Nakayama2026-06-09
⚛️ high-energy theory

Four-dimensional de Sitter cosmology on D-branes nucleated in an asymptotically AdS5×T1,1\text{AdS}_5\times T^{1,1} background

This paper demonstrates that four-dimensional de Sitter vacuum solutions can be realized on probe D3 and D5 branes nucleated in an asymptotically AdS5×T1,1\text{AdS}_5\times T^{1,1} background by leveraging stringy corrections, high chemical potentials, and specific gauge field configurations without the need for fine-tuning.

Cao H. Nam2026-06-09
⚛️ high-energy theory

Tracking the symmetries of Z3\mathbb Z_3-orbifold K3s within the Mathieu groups

This paper determines the group of holomorphic symplectic automorphisms for Z3\mathbb{Z}_3-orbifold limits of K3 surfaces and embeds this group into the Mathieu groups M12M_{12} and M24M_{24} by adapting lattice techniques to track these symmetries within the broader context of Mathieu moonshine.

Kasia Budzik, Anne Taormina, Mara Ungureanu, Katrin Wendland, Ida G. Zadeh2026-06-09
⚛️ high-energy theory

A Breakdown Case Study of the Lindblad Approach via Entanglement and Purity

This paper demonstrates that the standard Lindblad master equation fails to reproduce the non-exponential, Gaussian decay of purity and coherences observed in exact unitary dynamics of a many-body open quantum system, highlighting a fundamental limitation of Markovian approximations with constant coefficients in realistic settings.

Raoul Serao, Aniello Quaranta, Antonio Capolupo, Fabio Franchini, Salvatore Marco Giampaolo2026-06-09