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.

Computing renormalized curvature integrals on Poincaré-Einstein manifolds

This paper presents a general procedure for computing renormalized curvature integrals on Poincaré-Einstein manifolds, which clarifies the connection to existing Gauss-Bonnet-type formulas, identifies a specific scalar conformal invariant within them, and demonstrates that this invariant is non-unique in dimensions n8n \geq 8 by constructing natural divergence terms.

Jeffrey S. Case, Ayush Khaitan, Yueh-Ju Lin, Aaron J. Tyrrell, Wei Yuan2026-04-21⚛️ hep-th

Phase transitions and finite-size effects in integrable virial statistical models

This paper presents an exactly solvable integrable statistical model for fluid systems that links finite-size virial expansions to nonlinear hydrodynamic PDEs, demonstrating how thermodynamic phase transitions emerge as shock waves in the infinite-particle limit and applying this framework to map the QCD phase diagram while quantifying how finite-size effects obscure critical signatures.

Xin An, Francesco Giglio, Giulio Landolfi2026-04-21🌀 nlin

Strongly Coupled Sectors in Inflation: Gapless Theories and Unparticles

This paper computes primordial density perturbation correlation functions arising from the coupling of inflation to a gapless, strongly coupled "unparticle" sector, deriving explicit bispectra and trispectra shapes via Mellin-Barnes integration and weight-shifting operators to demonstrate that full shape analysis, rather than just squeezed limits, is required to distinguish unparticles from light particles.

Guilherme L. Pimentel, Chen Yang2026-04-21⚛️ gr-qc