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.

Beyond Expectation Values: Generalized Semiclassical Expansions for Matrix Elements of Gauge Coherent States

This paper derives a generalized semiclassical asymptotic expansion for off-diagonal matrix elements of non-polynomial operators in gauge theories, demonstrating that organizing the expansion around the genuine off-diagonal Berezin symbol rather than diagonal expectation values preserves the full holomorphic structure and provides accurate results for volume and flux operators in Loop Quantum Gravity, particularly when coherent-state labels are well separated.

Haida Li, Hongguang Liu2026-04-01⚛️ gr-qc

Macdonald Index from VOA and Graded Unitarity

This paper proposes a novel, intrinsic method to derive a special non-Schur limit of the Macdonald index for 4d $\mathcal{N}=2$ SCFTs directly from their associated 2d vertex operator algebras (VOAs) under the assumption of unitarity, extending the framework to include surface defects and introducing a new class of series analogous to conventional characters.

Hongliang Jiang2026-04-01⚛️ hep-th

Microscopic Origin of Page Curve

This paper utilizes a generalized Ryu-Takayanagi formula rooted in Hamiltonian phase space to demonstrate that black hole Wald entropy arises from microstates distinguishable by surface charges, thereby providing a microscopic origin for the Page curve and resolving the information paradox by revealing hidden black hole hair.

Artem Averin2026-04-01⚛️ hep-th

Constraining the Neutrino Mixing Matrix via Single-Sector Charged-Lepton Rotations in the JUNO Precision Era

This paper investigates constraints on the neutrino diagonalization matrix $U_\nu$ by assuming the charged-lepton mixing matrix consists of a single two-by-two rotation in one of the three sectors, utilizing the latest global fit incorporating JUNO's precision $\theta_{12}$ measurement to derive analytical sum-rule-like expressions for $U_\nu$ entries.

Alessio Giarnetti, Simone Marciano, Davide Meloni2026-04-01⚛️ hep-ph

Resolution of the cosmological constant problem by unimodular gravity and signature reversal symmetry

This paper proposes that the second aspect of the cosmological constant problem—the origin of its specific small value—can be resolved within unimodular gravity by modeling our 4-dimensional spacetime as a brane in a higher-dimensional bulk subject to signature reversal symmetry.

Recai Erdem2026-04-01⚛️ gr-qc

Recursive-algebraic solution of the closed string tachyon vacuum equation

This paper presents a recursive algebraic framework that reduces the closed string tachyon vacuum equation in the zero-momentum Lorentz-scalar sector to a sequence of matrix inversions via a seam-graded expansion, developed through human-AI collaboration.

Manki Kim2026-04-01⚛️ hep-th

Bethe Ansatz with a Large Language Model

This paper demonstrates that advanced Large Language Models can semi-autonomously derive novel Bethe Ansatz solutions for previously unsolved integrable spin chain models, including unique cases with broken left-right invariance and non-standard nested structures, with human researchers correcting minor errors and verifying the results against exact diagonalization.

Balázs Pozsgay, István Vona2026-04-01⚛️ hep-th

Holographic Weyl Anomaly and Kounterterms in AdS gravity

This paper demonstrates that adding Kounterterms to Einstein-AdS gravity allows for the extraction of holographic conformal anomalies in arbitrary odd dimensions, offering a method where the action variation has a closed form and yields significant portions of the Weyl anomaly despite a mismatch with standard techniques for non-conformally flat boundaries.

Giorgos Anastasiou, Jahaira Bonifacio-Chavez, Olivera Miskovic, Rodrigo Olea2026-04-01⚛️ hep-th

From Sub-eikonal DIS to Quark Distributions and their High-Energy Evolution

This paper establishes an explicit operator-level bridge between the shock-wave formalism and non-local light-cone expansion by demonstrating that first sub-eikonal corrections in deep-inelastic scattering reconstruct standard quark distributions at finite $x_B$ and deriving their high-energy evolution equations, which recover the Kirschner-Lipatov exponent with full finite- $N_c$ color factors under symmetric double-logarithmic conditions.

Giovanni Antonio Chirilli2026-04-01⚛️ nucl-th

The scalar--Maxwell-- $\Lambda(x)$ system: Wormhole spacetimes without nonlinear electrodynamics in unimodular gravity

This paper demonstrates that Unimodular Gravity enables the construction of exact traversable wormholes supported by a phantom scalar field and standard linear Maxwell electrodynamics, thereby eliminating the need for Non-Linear Electrodynamics typically required in General Relativity.

G. Alencar, T. M. Crispim2026-04-01⚛️ gr-qc

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