arXiv:hep-ph/9803472·v2·High Energy Physics — Phenomenology
The speed of cool soft pions
J.M. Martinez Resco🇪🇸 · M.A. Valle Basagoiti🇪🇸
Abstract
The speed of cool pions in the chiral limit is analytically computed at low temperature within the imaginary time formalism to two loop order. This evaluation shows a logarithmic dependence in the temperature where the scale within the logarithm is very large compared to the pion decay constant.
Comments: 10 pages, 2 figures.A few typos corrected,some comments added.Version to be published in Phys. Rev. D