Particle density in zero temperature symmetry restoring phase transitions in four-fermion interaction models
| dc.creator | Bang-Rong, Zhou | |
| dc.date | 2003-08-21 | |
| dc.date.accessioned | 2026-07-07T10:49:43Z | |
| dc.date.available | 2026-07-07T10:49:43Z | |
| dc.description | By means of critical behaviors of the dynamical fermion mass in four-fermion interaction models, we have shown by explicit calculations that when T=0 the particle density will have a discontinuous jumping across the critical chemical potential $μ_c$ in 2D and 3D Gross-Neveu (GN) model and these physically explain the first order feature of corresponding symmetry restoring phase transitions. For second order phase transitions in 3D GN model when $T\to 0$ and in 4D Nambu-Jona-Lasinio (NJL) model when T=0, it has been proven that the particle density itself will be continuous across $μ_c$ but its derivative over the chemical potential $μ$ will have a discontinuous jumping. The results give a physical explanation of implications of the tricritical point $(T,μ)=(0,μ_c)$ in 3D GN model. The discussions also show effectiveness of the critical analysis approach of phase transitions. | |
| dc.description | 6 pages, no figure | |
| dc.identifier | https://arxiv.org/abs/hep-th/0308139 | |
| dc.identifier | http://arxiv.org/abs/hep-th/0308139 | |
| dc.identifier | Commun.Theor.Phys.41:247-251,2004 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/184312 | |
| dc.subject | High Energy Physics - Theory | |
| dc.title | Particle density in zero temperature symmetry restoring phase transitions in four-fermion interaction models | |
| dc.type | text |