Topological susceptibility of SU(3) pure-gauge theory from out-of-equilibrium simulations

2024/11/01 by Claudio Bonanno, Bonanno, Claudio, Alessandro Nada +3
Physics and Astronomy · #Black Holes and Theoretical Physics #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2411.00620

openalex publication_date 2024/11/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

In JHEP 04 (2024) 126 [arXiv:2402.06561] we recently proposed an out-of-equilibrium setup to reduce the large auto-correlations of the topological charge in two-dimensional CP^N-1 models. Our proposal consists of performing open-boundaries simulations at equilibrium, and gradually switching on periodic boundary conditions out-of-equilibrium. Our setup allows to exploit the reduced auto-correlations achieved with open boundaries, avoiding at the same time unphysical boundary effects thanks to a Jarzynski-inspired reweighting-like procedure. We present preliminary results obtained applying this setup to the 4d SU(3) pure-gauge theory and we outline a computational strategy to mitigate topological freezing in this theory.

Related

• Scaling flow-based approaches for topology sampling in SU(3) gauge theory
• Full QCD with milder topological freezing
• Out-of-equilibrium simulations to fight topological freezing
• Topology and glueballs in SU(7) Yang-Mills with open boundary conditions
• Towards glueball masses of large-N~SU(N) Yang-Mills theories without topological freezing via parallel tempering on boundary conditions