Equation of State of an Interacting Pion Gas with Realistic $π$--$π$ Interactions
| dc.creator | Rapp, R. | |
| dc.creator | Wambach, J. | |
| dc.date | 1995-10-27 | |
| dc.date.accessioned | 2026-07-07T11:15:32Z | |
| dc.date.available | 2026-07-07T11:15:32Z | |
| dc.description | Within the finite-temperature Greens-function formalism we study the equation of state of a hot interacting pion gas at zero chemical potential. Employing realistic $ππ$ meson-exchange interactions we selfconsistently calculate the in-medium single-pion selfenergy and the $ππ$ scattering amplitude in the quasiparticle approximation. These quantities are then used to evaluate the thermodynamic potential, $Ω_π$(T), from which the state variables: pressure-, entropy- and energy-density can be derived. In contrast to earlier calculations based on the low-energy Weinberg Lagrangian we find an overall increase as compared to the free-gas results. We also consider the possibility of a dropping $ρ$-meson mass as suggested by the 'Brown-Rho Scaling' law. | |
| dc.description | 30 pages LaTeX, 3 postscript figures appended as uuencoded file | |
| dc.identifier | https://arxiv.org/abs/nucl-th/9510054 | |
| dc.identifier | http://arxiv.org/abs/nucl-th/9510054 | |
| dc.identifier | Phys.Rev.C53:3057-3068,1996 | |
| dc.identifier | doi:10.1103/PhysRevC.53.3057 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/192415 | |
| dc.subject | Nuclear Theory | |
| dc.title | Equation of State of an Interacting Pion Gas with Realistic $π$--$π$ Interactions | |
| dc.type | text |