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.

Landau-Khalatnikov-Fradkin Transformations in Reduced Quantum Electrodynamics: Perturbative and Nonperturbative Dynamics of the Fermion Propagator

This paper presents a comprehensive analysis of Landau-Khalatnikov-Fradkin transformations in reduced quantum electrodynamics to derive the fermion propagator in arbitrary covariant gauges, identifying $\xi=1/3$ as the optimal reference gauge for simplifying perturbative calculations and numerically confirming the gauge invariance of the chiral condensate and fermion pole mass.

Anam Ashraf, Faisal Akram, M. Jamil Aslam, Dania Rodríguez-Tzintzun, Adnan Bashir, Luis Albino2026-05-15⚛️ hep-th

Topological solitons of two-field scalar theories in rotationally symmetric backgrounds

This paper develops a Bogomol'nyi framework for two-field scalar theories with topological vacua in rotationally symmetric backgrounds of arbitrary dimensions, demonstrating how explicit radial potential dependence stabilizes localized solitons against scaling instability and yields exact solutions across various spacetimes, including Minkowski, Schwarzschild, and de Sitter geometries.

I. Andrade, M. A. Liao2026-05-15⚛️ hep-th

Constitutive Origin of Hamiltonian Degeneracy in Nonlinear Electrodynamics with Spontaneous Lorentz Symmetry Breaking

This paper demonstrates that the coincidence between the stationarity condition for magnetic backgrounds and the vanishing determinant of the Poisson-bracket matrix in Plebanski nonlinear electrodynamics arises from the constitutive origin of the theory, where the structural potential's complementary-energy nature links the magnetic constitutive Jacobian directly to the Dirac constraint structure.

C. A. Escobar, Román Linares2026-05-15⚛️ hep-th

Consistency in the Quantum-Improved Charged Black Holes

This paper investigates the thermodynamic and structural consistency of quantum-improved charged black holes with scale-dependent couplings, revealing that arbitrary radial dependencies for couplings are thermodynamically permissible while requiring specific constraints on the Newton coupling to reconcile equation and action levels, and suggesting that such quantum modifications may drive early universe isotropization.

Chiang-Mei Chen, Akihiro Ishibashi, Nobuyoshi Ohta2026-05-15⚛️ gr-qc

The Smarr Formula is Gauss's Law: A Kerr-Schild Single-Copy Perspective

This paper demonstrates that the Kerr-Schild single-copy framework reveals a structural equivalence between the thermodynamic Smarr formula for static, spherically symmetric black holes and Gauss's law, while also showing that the thermodynamic pressure-volume term in asymptotically anti-de Sitter spacetimes arises naturally from gauge-theoretic background subtraction.

Gokhan Alkac2026-05-15⚛️ hep-th

Holographic interpolations of codimension-2 defect CFTs

This proceedings contribution reviews the holographic description and field-theoretic properties of codimension-2 defect Conformal Field Theories, ranging from established supersymmetric configurations to recent non-supersymmetric developments, while demonstrating the consistency of physical observables across weak and strong coupling regimes through the holographic principle.

George Georgiou, Dimitrios Zoakos2026-05-15⚛️ hep-th

Scattering and depletion in a flying focus from conformal transformations

This paper demonstrates that photon emission and scattering amplitudes in flying focus fields can be derived from plane wave results via conformal transformations and Gaussian averaging, effectively allowing strong-field QED calculations to include focusing effects without additional computational cost.

Tim Adamo, Anton Ilderton, Adam Noble2026-05-15⚛️ hep-ph

From AdS Propagators to Celestial Propagators

This paper investigates the representation of AdS scalar propagators in the celestial basis by transforming bulk-to-boundary and boundary-to-boundary propagators via Schwinger parametrization and conformal primary wavefunctions, revealing distinct structural forms for massless and massive scalar fields that highlight a deep connection between AdS and celestial holography.

Pongwit Srisangyingcharoen2026-05-15⚛️ hep-th

Isocurvature-Free QCD Axion Dark Matter from Inflaton-Driven Early QCD: the Necessity of Inflationary Plateaus

This paper demonstrates that a direct inflaton-gluon coupling which dynamically raises the QCD confinement scale during inflation can suppress axion isocurvature perturbations and generate dark matter, but this mechanism analytically requires plateau-like inflationary potentials ( $p \ge 2$ ) to maintain perturbative control while simultaneously shifting the scalar spectral index to bluer values.

Katherine Freese, Evangelos I. Sfakianakis, Barmak Shams Es Haghi2026-05-15⚛️ hep-ph

Non-Invertible Symmetries on Tensor-Product Hilbert Spaces and Quantum Cellular Automata

This paper establishes that (1+1)-dimensional fusion category symmetries on tensor-product Hilbert spaces can be systematically realized with quantum cellular automata if and only if they are weakly integral, providing a general lattice construction and proving that the resulting QCA and symmetry-operator indices are uniquely determined by the underlying categorical data.

Rui Wen, Kansei Inamura, Sakura Schafer-Nameki2026-05-15⚛️ hep-th

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