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.

NNLO QCD corrections to γγQQˉ\gamma \gamma \rightarrow Q\bar{Q} from Local Unitarity combined with Coulomb resummation and NLO EW effects

This paper presents state-of-the-art NNLO QCD predictions for heavy-quark pair production in direct photon fusion by applying the Local Unitarity formalism to handle infrared singularities and combining these results with NLO electroweak corrections and NLP Coulomb resummation for top, bottom, and charm quarks.

Zeno Capatti, Mathijs Fraaije, Valentin Hirschi, Lucien Huber, Ben Ruijl, Hua-Sheng Shao2026-03-26⚛️ hep-ex

Noncoincidence f(Q)f(Q)-Cosmology with Dark Matter Coupled to Gravity

This paper investigates FLRW cosmology in symmetric teleparallel f(Q)f(Q) gravity with a nonminimal dark matter coupling, demonstrating that the noncoincidence gauge enables a multi-scalar field representation where the coupling facilitates a viable matter-dominated era and late-time acceleration, with the de Sitter solution emerging as the unique future attractor for power-law theories.

A. Abebe, P. S. Apostolopoulos, A. Giacomini, G. Leon, F. Moncada, A. Paliathanasis2026-03-26⚛️ gr-qc

Energy conditions of bouncing solutions in quadratic curvature gravity coupled with a scalar field

This paper analyzes energy conditions in nonsingular bouncing cosmologies within quadratic curvature gravity coupled to a scalar field, revealing that while the scalar-field description satisfies most conditions except the strong one, the effective energy-momentum tensor approach violates all four conditions near the bounce, thereby highlighting the intrinsically non-Einsteinian nature required to avoid initial singularities.

Yuki Hashimoto, Kazuharu Bamba, Sanjay Mandal2026-03-26⚛️ gr-qc