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.

⚛️ high-energy theory

Strong primordial inhomogeneities of axion-like field in Einstein-Gauss-Bonnet gravity

This paper proposes a model in Einstein-Gauss-Bonnet gravity where a complex scalar field with a Mexican hat potential undergoes a phase transition during inflation, generating strong small-scale primordial inhomogeneities and a gravitational wave background consistent with NANOGrav observations while avoiding large-scale isocurvature perturbations.

M. A. Krasnov, D. Z. Berkimbayev, A. Addazi, Y. Aldabergenov, M. Y. Khlopov2026-06-16
⚛️ general relativity

Testing the Nature of Rotating Black Hole Shadows Surrounded by a Thin Accretion Disk within Rastall Gravity

This paper employs ray-tracing simulations to demonstrate that in Rastall gravity, increasing the structure parameter γ\gamma enlarges the shadow radius of a rotating black hole while simultaneously reducing its distortion, thereby offering a potential observational method to constrain the theory's parameters.

Abdul Malik Sultan, Muhammad Israr Aslam, Manahil Ali, Dongping Su2026-06-16
⚛️ high-energy theory

Flat Gauging of Continuous (Non-invertible) Symmetries and Non-compact BF SymTFT for Compact Boson

This paper investigates the flat gauging of continuous (including non-invertible) symmetries in the two-dimensional compact boson, demonstrating how such procedures decompactify the theory and generate new orbifold branches, while formulating the corresponding Symmetry Topological Field Theory as a non-compact BF theory that encodes the Narain moduli space and T-duality.

Qiang Jia, Yi Zhang2026-06-16
🔢 mathematics

Flowing to Normality and the Fate of the Single Ring Theorem

This paper investigates a non-Hermitian matrix model that interpolates between ensembles obeying the Single Ring Theorem and normal matrices, revealing that the theorem's breakdown occurs early in the flow while singular value statistics transition from Wigner-Dyson to Poissonian, and proposing a conjecture to reconstruct eigenvalue densities from singular values using random permutations.

Joshua Feinberg, Roman Riser, Richard Scalettar, Anthony Zee2026-06-16
⚛️ lattice

Why fluctuations of conserved charges in the confining regime above TchT_{ch} behave as if the quarks were free?

This paper resolves the apparent contradiction between free-quark-like fluctuations of conserved charges and confined mesonic correlators above the chiral crossover by demonstrating that while mesonic propagation remains string-bound, conserved quark number densities effectively bypass confinement through quark interchanges between overlapping color-singlet clusters, a phenomenon analogous to quark-hadron duality.

L. Ya. Glozman2026-06-16
⚛️ high-energy theory

Machine Learning Topological Order from Defect Partition Functions

This paper presents a machine learning framework using Restricted Boltzmann Machines to extract Ising topological order from defect partition functions of the 2D Ising model, successfully deriving candidate wavefunctions and recovering the expected modular S-matrix to demonstrate a data-driven route from lattice statistical mechanics to topological quantum field theory.

Kazem Bitaghsir Fadafan, Wei Cui, Babak Haghighat, Shailesh Lal2026-06-16
⚛️ general relativity

Multi-band cross-correlation dark sirens: Enhancing cosmological parameter and gravitational-wave bias constraints

This paper presents the first Fisher forecast demonstrating that multi-band gravitational-wave observations, combining space-based B-DECIGO and ground-based Einstein Telescope and Cosmic Explorer detectors, significantly enhance cosmological parameter constraints and enable unprecedented redshift-resolved measurements of gravitational-wave clustering bias compared to single-band or ground-only configurations.

Ji-Yu Song, Ya-Nan Du, Yue-Yan Dong, Jing-Fei Zhang, Xin Zhang2026-06-16