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.

⚛️ general relativity

Inflationary models in a minimally coupled f(R,T)f(R,T) gravity: Constraints from $Planck,BICEP/, BICEP/Keck$, and ACT

This paper investigates the viability of mutated hilltop, D-brane, and Woods-Saxon inflationary models within a minimally coupled f(R,T)f(R,T) gravity framework, demonstrating that specific parameter spaces for these models can satisfy current observational constraints from Planck, BICEP/Keck, DESI, and ACT.

Biswajit Deb, Atri Deshamukhya2026-05-25
⚛️ high-energy theory

Central Charges and Vacuum Moduli of 2d N=(0,4)\mathcal{N}=(0,4) Theories from Class S\mathcal{S}

This paper investigates 2d N=(0,4)\mathcal{N}=(0,4) theories derived from 4d N=2\mathcal{N}=2 class S\mathcal{S} theories by proposing conjectural formulas for their central charges and validating them through a Lagrangian analysis of vacuum moduli spaces for SU(2)SU(2) gauge groups.

Wei Cui, Junkang Huang, Zi-Xiao Huang, Satoshi Nawata, Shutong Zhuang2026-05-25
⚛️ high-energy theory

Note on higher spins and holographic symmetry algebra

This paper extends the holographic symmetry algebra for gravitons and gluons by demonstrating that conformally soft higher spin particles generate a ww_{\infty} subalgebra (and an SS-algebra for colored particles) that does not commute with the standard w1+w_{1+\infty} subalgebra, a result verified via tree-level MHV amplitudes and extended to non-zero cosmological constants.

Shamik Banerjee, Suman Guchait, Raju Mandal, Sudhakar Panda2026-05-25✓ Author reviewed
⚛️ phenomenology

Scale-Invariant Open Quantum Systems

This paper establishes a comprehensive theoretical framework for open quantum systems coupled to scale-invariant "unparticle" environments, deriving exact non-Markovian dynamics and identifying a rich phase structure of decoherence and thermalization transitions governed by the scaling dimension dUd_{\mathcal{U}}, with applications ranging from critical quantum magnets and inflationary cosmology to high-energy astrophysical neutrinos.

Carlos Argüelles, Gabriela Barenboim, Gonzalo Herrera, Tanvi Krishnan, Héctor Sanchis2026-05-25
🔭 astrophysics

Gravitational waves from cosmic strings with friction: analytical approximations and parameter space

This paper derives analytical approximations for the ultra-high-frequency secondary peak in the gravitational wave background from cosmic strings sourced by friction-era loops, demonstrating their accuracy and revealing that this distinctive signature is observable across a broader range of high-energy physics scenarios than previously reported.

Sergei Mukovnikov, Lara Sousa2026-05-25
⚛️ high-energy theory

Cuspidal Singularities in Collapsing Domain Walls

This paper demonstrates that collapsing domain walls generically develop robust cuspidal edge and vertex singularities, a phenomenon predicted by Nambu-Goto and eikonal approximations and confirmed by full field theory simulations, which has significant implications for localized energy density and potential phenomenological effects.

Jose J. Blanco-Pillado, Matthew Elley, Francesc Ferrer, Alberto García Martín-Caro, Daniel Jiménez-Aguilar, Oriol Pujolà (…)2026-05-25