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.

Rotation of the polarization plane in axion fields: application to neutron star polar cap regions

This paper investigates the rotation of the polarization plane of electromagnetic waves caused by strong, spatially varying axion fields in neutron star polar caps, deriving both perturbative and non-perturbative solutions to demonstrate that such rotation requires axion inhomogeneity and predicting that the resulting nanosecond-scale gap-filling times could be detectable with atomic clocks.

Iver H. Brevik, Moshe M. Chaichian, Tiberiu Harko, Yuri N. Obukhov2026-04-01⚛️ hep-ph

Towards a formalism for ππ\pi\pi scattering from staggered lattice QCD

This paper addresses the challenges of extracting ππ\pi\pi scattering amplitudes from staggered lattice QCD by proposing two complementary approaches: calculating one-loop amplitudes using Rooted Staggered Chiral Perturbation Theory to verify quantization conditions, and generalizing the Lüscher formalism to explicitly incorporate taste-splitting and fourth-rooting effects.

A. Dean. M. Valois, M. Dai, A. El-Khadra, E. Gámiz, S. Lahert, R. Merino2026-04-01⚛️ hep-lat

Comment on "Lattice QCD constraints on the critical point from an improved precision equation of state"

This paper critiques a recent lattice QCD study that claims to exclude a QCD critical endpoint below μB450\mu_B \approx 450 MeV, arguing that the entropy-contour method used fails to directly probe critical singularities and therefore cannot provide model-independent constraints on the critical point's location.

Roy A. Lacey (Department of Chemistry, Stony Brook University, Stony Brook, NY, USA)2026-04-01⚛️ nucl-ex

Critical dimensions and small cycle dominance from all-orders asymptotics of dd-matrix theory

This paper analyzes the all-orders asymptotics of the partition function for counting gauge-invariant functions of dd matrices, revealing a "small-cycle dominance" combinatorial structure and establishing that the asymptotic expansion becomes convergent for d13d \ge 13 (or d7d \ge 7 for the fermionic case), thereby allowing the complete reconstruction of the theory from its high-energy limit in these critical dimensions.

Yang Lei, Sanjaye Ramgoolam2026-04-01⚛️ hep-th

Warm Warped Throats

This paper investigates two distinct single-field brane inflation scenarios—radial and angular—within a warped deformed conifold geometry, where moduli stabilization via D7-brane Kuperstein embeddings generates the inflaton potentials, demonstrating that embedding these models in the warm inflation paradigm with dissipation enables them to satisfy current observational constraints from Planck and ACT, whereas their cold inflation counterparts fail.

Dibya Chakraborty, Rudnei O. Ramos2026-04-01⚛️ hep-th