Relativistic Bose gases at finite density
| dc.creator | Andersen, Jens O. | |
| dc.date | 2005-01-12 | |
| dc.date | 2005-01-13 | |
| dc.date.accessioned | 2026-07-07T03:54:15Z | |
| dc.date.available | 2026-07-07T03:54:15Z | |
| dc.description | We consider a massive relativistic Bose gas with $N$ complex scalars at finite density. At zero temperature, we calculate the pressure, charge density and the speed of sound in the one-loop approximation. In the nonrelativistic limit, we obtain the classic results for the dilute Bose gas. We also discuss finite-temperature effects. In particular, we consider the problem of calculating the critical temperature for Bose-Einstein condensation. Dimensional reduction and effective-field-theory methods are used to perturbatively calculate the effects of the nonstatic Matsubara modes. Calculations of $T_c$ in the effective 3d theory require nonperturbative methods. Using the Monte Carlo simulations of X. Sun [Phys. Rev. {\bf E67}, 066702 (2003)] and the seven-loop variational perturbation theory (VPT) calculations of B. Kastening [Phys. Rev. {\bf A70}, 043621 (2004)], we obtain $T_c$ for N=2 to second order in the interaction. | |
| dc.description | 8 pages, 2 figs, revtex4 | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0501094 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0501094 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/44161 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Relativistic Bose gases at finite density | |
| dc.type | text |