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.

Carrier-envelope phase and pulse shape effects on vacuum pair production in asymmetric electric fields with bell-shaped envelopes

This study demonstrates that the carrier-envelope phase and pulse shape of asymmetric electric fields significantly influence electron-positron pair production, with specific configurations capable of enhancing pair density by two to three orders of magnitude through multiphoton dominance and optimized envelope steepness.

Abhinav Jangir, Anees Ahmed2026-04-20⚛️ hep-ph

Anomalous Decay Rate and Greybody Factors for Regular Black Holes with Scalar Hair

This paper investigates the propagation of massive scalar fields in regular black holes supported by a phantom scalar field, revealing that the scalar charge induces an anomalous decay rate where the longest-lived modes correspond to lower angular momentum above a critical mass, while also demonstrating excellent agreement between WKB and Horowitz-Hubeny methods for quasinormal frequencies and clarifying how regularity affects greybody factors.

Ramón Bécar, P. A. González, Eleftherios Papantonopoulos, Yerko Vásquez2026-04-20⚛️ hep-th

Exact solution of two-dimensional Palatini Gauss-Bonnet theory on a strip

This paper presents an exact solution for two-dimensional Palatini Gauss-Bonnet theory on an infinite strip, demonstrating that its boundary degrees of freedom correspond to geodesics on the SL(2,R)SL(2,\mathbb{R}) group manifold with a mass determined by the coupling constant, while also exploring alternative boundary Hamiltonians and providing initial comments on the quantum theory.

Máximo Bañados, Marc Henneaux2026-04-20⚛️ hep-th