hep-th papers | Gist.Science

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.

Black hole photon ring beyond General Relativity: an integrable parametrization

This paper introduces a symmetry-preserving "Kerr off-shell" parametrization to analytically derive the photon ring's critical curve in beyond-Kerr geometries, demonstrating that the circlipse fitting function suffers from significant degeneracy where identical ring shapes can arise from distinct combinations of mass, spin, and deviation parameters, thereby necessitating independent measurements of mass and spin to rigorously test the Kerr hypothesis.

Jibril Ben Achour, Eric Gourgoulhon, Hugo Roussille2026-03-27⚛️ gr-qc

Symbol Alphabets in QCD and Flag Cluster Algebras

This paper connects recent determinations of the 245-letter symbol alphabet for planar massless two-loop six-point Feynman integrals with the cluster algebra of the partial flag variety $Fl_{2,n-2;n}$ by demonstrating that most rational symbol letters are expressible via flag cluster variables while all algebraic letters emerge from infinite mutation sequences.

Andrzej Pokraka, Marcus Spradlin, Anastasia Volovich, He-Chen Weng2026-03-27⚛️ hep-th

Generation of Volume-Law Entanglement by Local-Measurement-Only Quantum Dynamics

This paper demonstrates that volume-law entanglement can be generated in a one-dimensional fermionic system without intrinsic unitary dynamics by employing a non-random, non-commuting local measurement protocol involving an auxiliary chain and detector qubits, while also showing that non-local higher-body measurements can be used to control and reduce such entanglement.

Surajit Bera, Igor V. Gornyi, Sumilan Banerjee, Yuval Gefen2026-03-27🔬 cond-mat.mes-hall

Anisotropic critical points from holography

This paper presents a comprehensive analysis of 5-dimensional Einstein-Maxwell-Dilaton-Axion holographic theories with exponential couplings, deriving exact anisotropic solutions that serve as IR fixed points, characterizing their thermodynamic and transport properties, and demonstrating their utility as benchmarks for strongly coupled anisotropic matter in systems ranging from quark-gluon plasma to neutron star cores.

Dimitrios Giataganas, Umut Gürsoy, Claire Moran, Juan F. Pedraza, David Rodríguez Fernández2026-03-27⚛️ hep-th

Regular Black Hole Cores via Gravitational Evanescence of Collapsing Matter

This paper demonstrates that modified Einstein's equations with non-minimal gravity-matter coupling can resolve gravitational collapse singularities into regular black holes with de Sitter, Minkowski, or steep-pressure cores, proving that a Minkowski core specifically requires the Newton constant to assume negative values before vanishing.

Antonio Panassiti2026-03-27⚛️ gr-qc

Holography for de Sitter bubble geometries

This paper generalizes de Sitter holography to geometries with a bubble of smaller or vanishing cosmological constant, proposing that the spacetime is encoded on two holographic screens when the observer's causal patch overlaps with the parent region, while requiring additional screens when they are causally disconnected.

Anastasios Irakleous, François Rondeau, Nicolaos Toumbas2026-03-27⚛️ hep-th

Generalized Wigner theorem for non-invertible symmetries

This paper generalizes Wigner's theorem to non-invertible symmetries by proving that such symmetries must be represented as projective unitary or antiunitary transformations (partial isometries), thereby extending the definition of physical states to equivalence classes in an extended, gauged Hilbert space.

Gerardo Ortiz, Chinmay Giridhar, Philipp Vojta, Andriy H. Nevidomskyy, Zohar Nussinov2026-03-27🔢 math-ph

An analytic approach for holographic entanglement entropy at (quantum) criticality

This paper presents a fully analytic approach to calculating holographic entanglement entropy for strip regions in large-dimensional AdS black hole backgrounds by dividing the geometry into horizon and bulk patches, yielding simple results for extremal black holes and proposing a general formula for subleading finite-size corrections in both high-dimensional and near-critical 3+1 dimensional theories.

Parul Jain, Matti Järvinen2026-03-27⚛️ hep-th

Strong CP problem, theta term and QCD topological properties

This chapter introduces the $\theta$ -dependence and topological properties of QCD that lead to the strong CP problem, while discussing analytical approaches for studying these features and comparing their predictions with lattice simulation results.

Claudio Bonanno, Claudio Bonati, Massimo D'Elia2026-03-27⚛️ hep-lat

Constrained instantons in scalar field theories

This paper revitalizes Affleck's 1981 concept of constrained instantons into a complete method for computing vacuum decay rates in scalar field theories lacking traditional saddle points, demonstrating its efficacy through numerical solutions in a massive scalar theory with negative quartic interaction that reveal a distinct two-branch structure separating constrained instantons from action minima.

Benjamin Elder, Kinga Gawrych, Arttu Rajantie2026-03-27🌀 nlin

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