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.

The Higgs-top-ZZ mass coincidence relation after NNLO matching

This paper re-evaluates the proposed Higgs-top-Z mass coincidence relation MH2MZMtM_H^2\simeq M_ZM_t using 2025 PDG data and NNLO matching, finding that while the pole-level geometric relation remains a viable 1.4σ1.4\sigma test, the corresponding exact running-coupling boundary condition is incompatible with measurements, thereby necessitating a finite matching factor or new symmetry to explain the observed mass spectrum.

E. Torrente-Lujan2026-05-22⚛️ hep-ph

New mechanism for fermion localization in f(T,TG)f(T,T_G)-brane

This paper investigates fermion localization in a five-dimensional braneworld within modified teleparallel gravity f(T,TG)f(T,T_G), demonstrating that non-minimal coupling to torsional invariants, particularly the teleparallel Gauss-Bonnet term, significantly alters effective potentials to enable the localization of a single chiral zero-mode and the emergence of resonant states, while information-theoretic measures confirm that these torsional modifications induce stronger confinement and nontrivial information redistribution.

Allan R. P. Moreira, Fernando M. Belchior, Guo-Hua Sun, Shi-Hai Dong2026-05-22⚛️ hep-th

Holographic Dark Energy with Hubble Radius as an Infrared Cutoff in Einstein-Cartan Gravity

This paper investigates non-interacting holographic dark energy with the Hubble radius as an infrared cutoff within Einstein-Cartan gravity, demonstrating that a Weyssenhoff spin fluid naturally induces a torsion scalar scaling as Φa3\Phi \sim a^{-3}, which drives cosmic acceleration, allows the dark energy equation of state to cross the phantom divide, and modifies the cosmic distance duality relation while remaining consistent with recent DESI observations.

Yongjun Yun, Jungjai Lee2026-05-22⚛️ gr-qc