Model study of the sign problem in a mean-field approximation
| dc.creator | Hidaka, Yoshimasa | |
| dc.date | 2007-10-16 | |
| dc.date.accessioned | 2026-07-07T11:53:38Z | |
| dc.date.available | 2026-07-07T11:53:38Z | |
| dc.description | We study the sign problem of the fermion determinant at nonzero baryon chemical potential. For this purpose we apply a simple model derived from Quantum Chromodynamics, in the limit of large chemical potential and mass. For SU(2) color, there is no sign problem and the mean-field approximation is similar to data from the lattice. For SU(3) color the sign problem is unavoidable, even in a mean-field approximation. We apply a phase-reweighting method, combined with the mean-field approximation, to estimate thermodynamic quantities. We also investigate the mean-field free energy using a saddle-point approximation. | |
| dc.description | 7 pages, 2 figures, talk presented at the XXV International Symposium on Lattice Field Theory, July 30 - August 4, 2007, Regensburg, Germany | |
| dc.identifier | https://arxiv.org/abs/0710.3172 | |
| dc.identifier | http://arxiv.org/abs/0710.3172 | |
| dc.identifier | PoSLAT2007:384,2007 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/204613 | |
| dc.subject | High Energy Physics - Lattice | |
| dc.title | Model study of the sign problem in a mean-field approximation | |
| dc.type | text |