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.

DD-Dimensional Modular Assembly of Higher-Derivative Four-Point Contact Amplitudes Involving Fermions

This paper introduces a robust, DD-dimensional modular framework that systematically constructs higher-derivative four-point contact amplitudes involving fermions by combining gauge-invariant kinematic blocks with permutation-invariant polynomials, thereby ensuring manifest compatibility with the double-copy program and facilitating the generation of operator towers for gauge and gravity theories.

John Joseph M. Carrasco, Sai Sasank Chava, Alex Edison, Aslan Seifi2026-04-08⚛️ hep-ph

Dynamical Tidal Response of Non-rotating Black Holes: Connecting the MST Formalism and Worldline EFT

This paper establishes a connection between the Mano-Suzuki-Takasugi formalism and worldline effective field theory to analyze the dynamical tidal response of non-rotating black holes in general relativity, revealing that renormalized tidal response functions and resulting Love numbers are inherently scheme-dependent and sensitive to initial renormalization conditions.

Hajime Kobayashi, Shinji Mukohyama, Naritaka Oshita, Kazufumi Takahashi, Vicharit Yingcharoenrat2026-04-08⚛️ gr-qc

Twisted Feynman Integrals: from generating functions to spin-resummed post-Minkowskian dynamics

This paper introduces "twisted Feynman integrals" characterized by an additional linear exponential factor in the integrand, establishes their geometric framework as exponential periods, and generalizes standard computational tools to reveal that their Symanzik polynomials become graded and their function space geometry cannot be determined solely by leading singularities.

Joon-Hwi Kim, Jung-Wook Kim, Jungwon Lim2026-04-08⚛️ hep-ph

Untwisting the double copy: the zeroth copy as an optical seed

This paper establishes a historical optical foundation for stationary vacuum Kerr--Schild spacetimes by demonstrating how a single complex optical seed, derived from expansion and twist, algebraically reconstructs the spacetime congruence and serves as the normalized zeroth-copy data that generates both the metric profile and the associated single-copy gauge field within the double-copy framework.

Damien A. Easson, Michael J. Falato2026-04-08⚛️ hep-th