Hep-Lat, short for High Energy Physics – Lattice, explores the fundamental forces of nature by simulating particle interactions on a digital grid. Instead of relying solely on abstract equations, researchers in this field use powerful computers to model how quarks and gluons bind together, offering deep insights into the structure of matter that are often impossible to derive analytically.

Gist.Science ensures these complex discoveries from arXiv remain accessible to everyone. We process every new preprint in this category as it is posted, providing both plain-language explanations for the curious and detailed technical summaries for experts. This dual approach bridges the gap between cutting-edge simulation work and broader scientific understanding.

Below are the latest papers in High Energy Physics – Lattice, curated directly from arXiv and ready for you to explore.

Machine-learned RG-improved gauge actions and classically perfect gradient flows

This paper demonstrates that a machine-learned, classically perfect fixed-point action for four-dimensional SU(3) gauge theory, when analyzed via gradient flow, effectively suppresses discretization errors to below 1% on coarse lattices, thereby enabling the extraction of continuum physics and validating the potential of machine learning for realizing quantum perfect actions.

Kieran Holland, Andreas Ipp, David I. Müller, Urs Wenger2026-02-16⚛️ hep-lat

Higher-Order Structure of Hamiltonian Truncation Effective Theory

This paper advances the Hamiltonian truncation effective theory for two-dimensional λϕ4\lambda\phi^4 by deriving all-order local matching corrections through diagram resummation and computing next-to-next-to-local non-local corrections at O(Emax4)\mathcal{O}(E_{\rm max}^{-4}), thereby demonstrating the necessity of an increasingly rich operator basis to systematically mitigate truncation artifacts.

Andrea Maestri, Simone Rodini, Barbara Pasquini2026-02-16⚛️ hep-lat

Matter-induced plaquette terms in a Z2\mathbb{Z}_2 lattice gauge theory

This study demonstrates that dynamical hard-core bosonic matter in a (2+1)(2+1)D Z2\mathbb{Z}_2 lattice gauge theory naturally induces significant plaquette interactions, enabling the realization of topological quantum spin liquids and confinement-deconfinement transitions without requiring explicit multi-body terms in the Hamiltonian.

Matjaž Kebrič, Fabian Döschl, Umberto Borla, Jad C. Halimeh, Ulrich Schollwöck, Annabelle Bohrdt, Fabian Grusdt2026-02-16⚛️ hep-lat