2011/11/06 by Wolfgang Unger, Unger, Wolfgang, Philippe de Forcrand +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High-Energy Particle Collisions Research #Physics of Superconductivity and Magnetism #Quantum Chromodynamics and Particle Interactions #hep-lat
paper · pdf · doi:10.48550/arxiv.1111.1434
7 pages, 3 figures. Talk presented at the XXIX International Symposium on Lattice Field Theory - Lattice 2011, July 10-16, 2011, Squaw Valley, Lake Tahoe, California, USA
arxiv created 2011/11/06 · openalex publication_date 2011/11/06 · arxiv updated 2011/11/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We present results for lattice QCD with staggered fermions in the limit of infinite gauge coupling, obtained from a worm-type Monte Carlo algorithm on a discrete spatial lattice but with continuous Euclidean time. This is achieved by sending both the anisotropy parameter γ2≃ a/\at and the number of time-slices Nτ to infinity, keeping the ratio γ2/Nτ≃ aT fixed. In this limit, ambiguities arising from the anisotropy parameter γ are eliminated and discretization errors usually introduced by a finite temporal lattice extent \Nt are absent. The obvious gain is that no continuum extrapolation Nτ→ ∞ has to be carried out. Moreover, the algorithm is faster and the sign problem disappears completely. As a first application, we determine the phase diagram as a function of temperature and real and imaginary baryon chemical potential. We compare our computations with those on lattices with discrete Euclidean time. Discretization errors due to finite \Nt in previous studies turn out to be large at low temperatures.