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.

Hamiltonian Analysis of Pre-geometric Gravity

This paper presents a Hamiltonian analysis of pre-geometric gauge theories where Einstein-Cartan gravity emerges via spontaneous symmetry breaking, demonstrating the recovery of canonical General Relativity in the infrared limit while characterizing the ultraviolet degrees of freedom and exploring pathways for UV completion through extended BF formulations and a generalized Wheeler-DeWitt equation.

Andrea Addazi, Salvatore Capozziello, Antonino Marcianò, Giuseppe Meluccio2026-05-05⚛️ gr-qc

Soft theorems of tree-level Tr(ϕ3){\rm Tr}(ϕ^3), YM and NLSM amplitudes from $2$-splits

This paper extends a factorization-based method utilizing physical poles and newly discovered $2$-splits to fully derive leading and sub-leading single- and double-soft theorems for tree-level Tr(ϕ3){\rm Tr}(\phi^3), Yang-Mills, and non-linear sigma model amplitudes, while also establishing universal higher-order soft representations and revealing a kinematic duality that relates gauge invariance to Adler zeros.

Kang Zhou2026-05-05⚛️ hep-th

Conditions for positivity of energy in superrenormalizable polynomial gravity

This paper investigates the conditions for energy positivity in superrenormalizable polynomial gravity models with six and eight derivatives, demonstrating that while these theories suffer from ghost and tachyonic states, their leading UV energy contributions in the tensor sector are positively defined, unlike in fourth-order gravity, and extends this analysis to the scalar sectors.

Públio Rwany B. R. do Vale2026-05-05⚛️ gr-qc

Differential Contracting Homotopy in the Linearized 3d Higher-Spin Theory

This paper applies the differential homotopy approach to the linearized 3d higher-spin gauge theory to unify previously known solutions for disentangling dynamical and topological fields, derive new solutions related to background covariant derivative cohomology, and propose an alternative method for obtaining disentangled equations via a non-conventional S1S_1 field solution.

M. A. Vasiliev, V. A. Vereitin2026-05-05⚛️ hep-th