Ferromagnetism of two-flavor quark matter in chiral and/or color-superconducting phases at zero and finite temperatures
| dc.creator | Inui, M. | |
| dc.creator | Kohyama, H. | |
| dc.creator | Niégawa, A. | |
| dc.date | 2007-09-14 | |
| dc.date.accessioned | 2026-07-07T08:29:36Z | |
| dc.date.available | 2026-07-07T08:29:36Z | |
| dc.description | We study the phase structure of the unpolarized and polarized two-flavor quark matters at zero and finite temperatures within the Nambu--Jona-Lasinio (NJL) model. We focus on the region, which includes the coexisting phase of quark-antiquark and diquark condensates. Generalizing the NJL model so as to describe the polarized quark matter, we compute the thermodynamic potential as a function of the quark chemical potential ($μ$), the temperature ($T$), and the polarization parameter. The result heavily depends on the ratio $G_D / G_S$, where $G_S$ is the quark-antiquark coupling constant and $G_D$ is the diquark coupling constant. We find that, for small $G_D / G_S$, the "ferromagnetic" phase is energetically favored over the "paramagnetic" phase. On the other hand, for large $G_D / G_S$, there appears the window in the ($μ, T$)-plane, in which the "paramagnetic" phase is favored. | |
| dc.description | 25 pages, 10 figures | |
| dc.identifier | https://arxiv.org/abs/0709.2204 | |
| dc.identifier | http://arxiv.org/abs/0709.2204 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/137991 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Ferromagnetism of two-flavor quark matter in chiral and/or color-superconducting phases at zero and finite temperatures | |
| dc.type | text |