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.

🔬 mesoscale physics

Generation of Volume-Law Entanglement by Local-Measurement-Only Quantum Dynamics

This paper demonstrates that volume-law entanglement can be generated in a one-dimensional fermionic system without intrinsic unitary dynamics by employing a non-random, non-commuting local measurement protocol involving an auxiliary chain and detector qubits, while also showing that non-local higher-body measurements can be used to control and reduce such entanglement.

Surajit Bera, Igor V. Gornyi, Sumilan Banerjee, Yuval Gefen2026-03-27
⚛️ general relativity

A Light-Cone Approach to Higher-Order Cosmological Observables

This paper develops a second-order cosmological perturbation theory on a light-cone background, establishing a gauge-invariant framework that connects to the Observational Synchronous Gauge and successfully computes the luminosity distance-redshift relation up to second order while eliminating observer-position divergences in a model-independent manner.

Pierre Béchaz, Giuseppe Fanizza, Giovanni Marozzi, Matheus R. Medeiros Silva2026-03-27
⚛️ high-energy theory

Topological 5d N=2\mathcal{N} = 2 Gauge Theories: Mirror Symmetry and Langlands Duality of A∞A_\infty-categories of Floer Homologies

This paper establishes a physical proof of mirror symmetry and Langlands duality between specific topological 5d N=2\mathcal{N}=2 gauge theories, demonstrating that the A∞A_\infty-categories of Floer homologies arising from Haydys-Witten and Geyer-Mülsch twists on certain five-manifolds are dual to each other and provide gauge-theoretic generalizations of mathematical conjectures by Bousseau and Doan-Rezchikov.

Arif Er, Meng-Chwan Tan2026-03-27
⚛️ high-energy theory

The Art of Branching: Cobordism Junctions of 10d String Theories

This paper presents the explicit construction and microscopic worldsheet description of 9d junctions where multiple 10d string theories (including heterotic, type II, type 0, and orientifolds) dynamically branch from one another, providing a realization of the Cobordism Conjecture through gapped degrees of freedom that close at the junction to trigger the transition.

Chiara Altavista, Edoardo Anastasi, Roberta Angius, Angel M. Uranga2026-03-27