Lattice QCD at finite temperature and density in the phase-quenched approximation
| dc.creator | Kogut, J. B. | |
| dc.creator | Sinclair, D. K. | |
| dc.date | 2007-12-17 | |
| dc.date | 2008-05-12 | |
| dc.date.accessioned | 2026-07-07T11:39:27Z | |
| dc.date.available | 2026-07-07T11:39:27Z | |
| dc.description | QCD at a finite quark-number chemical potential $μ$ has a complex fermion determinant, which precludes its study by standard lattice QCD simulations. We therefore simulate lattice QCD at finite $μ$ in the phase-quenched approximation, replacing the fermion determinant with its magnitude. These simulations are used to study the finite temperature transition for small $μ$,where the position and nature of this transition are expected to be unchanged by this approximation. We look for the expected critical endpoint for 3-flavour QCD. Here, it had been argued that the critical point at zero $μ$ would become the critical endpoint at small $μ$, for quark masses just above the critical mass. Our simulations indicate that this does not happen, and there is no such critical endpoint for small $μ$. We discuss how we might adapt techniques used for imaginary $μ$ to improve the signal/noise ratio and strengthen our conclusions, using results from relatively low statistics studies. | |
| dc.description | 20 pages, Latex source, 6 postscript figures. Version modified for publication. Most changes made in the introduction and conclusions. One reference removed and a number of references added | |
| dc.identifier | https://arxiv.org/abs/0712.2625 | |
| dc.identifier | http://arxiv.org/abs/0712.2625 | |
| dc.identifier | Phys.Rev.D77:114503,2008 | |
| dc.identifier | doi:10.1103/PhysRevD.77.114503 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/199926 | |
| dc.subject | High Energy Physics - Lattice | |
| dc.title | Lattice QCD at finite temperature and density in the phase-quenched approximation | |
| dc.type | text |