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

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 ξ=1/3\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
⚛️ high-energy theory

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
⚛️ high-energy theory

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
⚛️ general relativity

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
⚛️ high-energy theory

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