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.

⚛️ nuclear theory

Analytic continuation of Green's functions with a neural network

This paper presents a convolutional neural network trained on improved Gaussian data to reconstruct spectral densities from imaginary-time Green's functions, demonstrating that while it outperforms the standard Maximum Entropy method on data similar to its training set, the latter remains superior for identifying physical features in complex models like the 1d Hubbard and 2d SSH systems.

Fakher Assaad, Johanna Erdmenger, Anika Götz, René Meyer, Martin Rackl, Yanick Thurn2026-02-24
⚛️ lattice

Dark Glueball Direct Detection

This paper proposes a viable glueball dark matter candidate arising from a confined Yang-Mills sector coupled to the Standard Model via vector-like fermion portals, developing a non-perturbative effective field theory framework that predicts a steeply scaling spin-independent scattering cross-section (σSI∝ΛD2.15mψ−8\sigma_{\rm SI}\propto \Lambda_D^{2.15} m_\psi^{-8}) within the sensitivity reach of current and next-generation xenon direct-detection experiments.

Ji-Wei Li, Roman Pasechnik, Wei Wang, Zhi-Wei Wang2026-02-24
⚛️ general relativity

Exploring the Universe Expansion History with f(R,T) Gravity: Constraints on Cosmological Parameters

This paper investigates two specific f(R,T)=R+αTnf(R,T) = R + \alpha T^n gravity models with n=1n=1 and n≠1n \neq 1, demonstrating through observational data analysis and parameter constraints that they successfully reproduce the Universe's transition from deceleration to late-time acceleration while remaining consistent with the standard Λ\LambdaCDM model and satisfying key energy conditions.

Mustapha Lamaaoune2026-02-24
⚛️ general relativity

Thermal aspects and particle dynamics of Euler-Heisenberg AdS black hole in 4D Einstein Gauss-Bonnet gravity

This paper constructs and analyzes charged AdS black hole solutions in 4D Einstein-Gauss-Bonnet gravity coupled to Euler-Heisenberg nonlinear electrodynamics, demonstrating how higher-curvature and nonlinear electromagnetic corrections significantly alter horizon structures, thermodynamic phase transitions, Joule-Thomson expansion, and particle dynamics.

Bilel Hamil, Faisal Javed2026-02-24
⚛️ general relativity

De Sitter quantum gravity and the emergence of local algebras

This paper investigates how local physics emerges in perturbative quantum gravity on de Sitter space by constructing gauge-invariant relational observables that approximate local field algebras, revealing that while this approximation is limited near minimal spheres to logarithmic time intervals, it remains valid over arbitrarily large regions in the far future or past, including entire static patches.

Molly Kaplan, Donald Marolf, Xuyang Yu, Ying Zhao2026-02-23