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.

🌀 nonlinear sciences

Integrable Free and Interacting Fermions

This paper establishes rigorous integrability conditions for one-dimensional quantum systems to be classified as free or interacting fermions by defining free fermions through the simultaneous satisfaction of the Yang-Baxter equation and Shastry's decorated star-triangle relation, and provides a procedure to construct integrable interacting models, such as the Hubbard and XY models, via deformations of these free fermionic RR-matrices.

Zhao Zhang2026-03-13
⚛️ high-energy theory

The phase diagram of the D1-D5 CFT and localized black holes

This paper analyzes the microcanonical phase diagram of the D1-D5 CFT dual to type II string theory on AdS3×S3×T4AdS_3 \times S^3 \times T^4, mapping the transitions between uniform and localized black hole phases and identifying a novel lattice phase of S5×S3S^5 \times S^3 black holes that dominates at high energies when the torus is significantly larger than the AdS radius.

Ofer Aharony, Ronny Frumkin, Jonathan Mehl2026-03-13
🔬 atomic physics

Unitary imaginary time evolution and ground state preparation using multi-copy protocols

This paper introduces deterministic unitary protocols that approximate imaginary-time evolution for ground-state preparation using multi-copy registers and controlled-SWAP operations, analyzing trade-offs between circuit depth and width in tree versus "hedge" architectures while demonstrating the potential of mid-circuit post-selection and platform-specific implementations.

Tal Schwartzman, Torsten V. Zache, Hannes Pichler, H. R. Sadeghpour2026-03-13
⚛️ general relativity

Temperature Fluctuations and quantum corrections near Black Hole Horizon

This paper utilizes the Euclidean Gravity approach to demonstrate that spatially varying near-horizon temperature fluctuations in a Schwarzschild Black Hole are intrinsically linked to near-horizon supertranslations, allowing the derivation of temperature-dependent corrections to the free energy and a microscopic partition function that describe low-energy horizon physics as a sum over these supertranslations.

Anamika Avinash Pathak, Swastik Bhattacharya2026-03-13
⚛️ high-energy theory

Time irreversibility and entropy production in non-Hermitian Model A field theories

This paper establishes a systematic framework using stochastic path-integral formalism to quantify time irreversibility and entropy production in non-Hermitian Model A field theories, demonstrating that the local entropy production rate is determined by the anti-Hermitian component of the dynamics and localizes at interfaces in non-uniform states.

Matthias Carosi, Ot Garcés, Adrià Garcés, Demian Levis2026-03-13