Vacuum and thermal fluctuation energies of a soliton at finite temperatures
arXiv:2007.05731 · doi:10.1016/j.nuclphysa.2021.122256
Abstract
We have studied the vacuum and thermal fluctuation energies of a soliton at finite temperatures. First the vacuum energy coming from the Dirac sea is calculated by a summation of the discrete and continuum energy spectrum of the Dirac equation in the background field of a soliton. And all the divergences are removed by the same renormalization scheme at zero temperature. Then the vacuum energy and thermal fluctuation energy at finite temperatures in a temperature dependent soliton background are calculated. And the numerical results are analyzed and discussed.
13 pages, 7 figures; some paragraphs and references are added