Speaker
Dr
Shotaro Imai
(Kyoto University)
Description
We investigate thermodynamics of hadrons using the Gaussian functional method (GFM) at finite temperature. Since the interaction among mesons is very large, we take into account fluctuations of mesons around their mean field values using GFM. We obtain the ground state energy by solving the Schroedinger equation. The meson masses are obtained using the energy minimization condition. The resulting mass of Nambu-Goldstone (NG) boson is not zero even in the spontaneous chiral symmetry broken phase due to the non-perturbative effect. We consider then the bound state of mesons using the Bethe-Salpeter equation and show the NG theorem is recovered. We investigate further the behavior of the meson masses and the mean filed value as functions of temperature for the cases of chiral limit and explicit chiral symmetry breaking.
Primary authors
Dr
Hua-Xing Chen
(Beihang University)
Dr
Shotaro Imai
(Kyoto University)
Co-authors
Prof.
Hiroshi Toki
(Research Center for Nuclear Physics, Osaka University)
Dr
Lisheng Geng
(Beihang University)
