2003/03/05 by David H. Adams, David Adams, Shailesh Chandrasekharan · 2 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #cond-mat #hep-lat #hep-ph
paper · pdf · doi:10.1016/s0550-3213(03)00350-x
published as Nucl.Phys. B662 (2003) 220-246 · 36 Pages, 9 figures, aps revtex format
arxiv created 2003/03/05 · openalex publication_date 2003/05/12 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We construct a new and efficient cluster algorithm for updating strongly coupled U(N) lattice gauge theories with staggered fermions in the chiral limit. The algorithm uses the constrained monomer-dimer representation of the theory and should also be of interest to researchers working on other models with similar constraints. Using the new algorithm we address questions related to the chiral limit of strongly coupled U(N) gauge theories beyond the mean field approximation. We show that the infinite volume chiral condensate is non-zero in three and four dimensions. However, on a square lattice of size L we find ∑x < ψψ(x) ψψ(0) > ∼ L2-η for large L where η= 0.420(3)/N + 0.078(4)/N2. These results differ from an earlier conclusion obtained using a different algorithm. Here we argue that the earlier calculations were misleading due to uncontrolled autocorrelation times encountered by the previous algorithm.