A BCS Gapped Superfluid on the Lattice
| dc.creator | Walters, David N. | |
| dc.date | 2003-10-13 | |
| dc.date.accessioned | 2026-07-07T10:48:22Z | |
| dc.date.available | 2026-07-07T10:48:22Z | |
| dc.description | We discuss results of numerical analyses of the 3+1 dimensional Nambu--Jona-Lasinio model at non-zero baryon density. By studying relevant order parameters, it is shown that the model goes through a transition between a vacuum with broken chiral symmetry, and a chirally restored phase at high baryon chemical potential (mu) with a diquark condensate roughly proportional to the area of the Fermi surface and a broken U(1) baryon number symmetry. The condensation of diquark pairs from the fermionic spectrum is shown to lead to an energy gap (Delta) about the Fermi energy (E_F), which is found to be approximately 15% of the vacuum fermion mass and roughly independent of mu in the chirally restored phase. The ground-state is believed, therefore, to be that of a BCS superfluid. We also discuss the effect of simulating on a finite volume, and any caveats this places on the conclusions made above. | |
| dc.description | 8 pages, 4 figures, Contribution to Workshop on Finite Density QCD at Nara, Japan, July 10-12 2003 | |
| dc.identifier | https://arxiv.org/abs/hep-lat/0310038 | |
| dc.identifier | http://arxiv.org/abs/hep-lat/0310038 | |
| dc.identifier | Prog.Theor.Phys.Suppl.153:78-85,2004 | |
| dc.identifier | doi:10.1143/PTPS.153.78 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/183854 | |
| dc.subject | High Energy Physics - Lattice | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | Nuclear Theory | |
| dc.title | A BCS Gapped Superfluid on the Lattice | |
| dc.type | text |