par Escribano, RAFEL 
Référence Physical review. D, Particles, fields, gravitation, and cosmology, 62, 5, page (11)
Publication Publié, 2000
Référence Physical review. D, Particles, fields, gravitation, and cosmology, 62, 5, page (11)
Publication Publié, 2000
Article révisé par les pairs
| Résumé : | We study the temperature dependence of the (Formula presented) and (Formula presented) meson masses within the framework of (Formula presented) chiral perturbation theory, up to next-to-leading order in a simultaneous expansion in momenta, quark masses and number of colors. We find that both masses decrease at low temperatures, but only very slightly. We analyze higher order corrections and argue that large (Formula presented) suggests a discontinuous drop of (Formula presented) at the critical temperature of deconfinement (Formula presented) consistent with a first order transition to a phase with approximate (Formula presented) symmetry. © 2000 The American Physical Society. |
