Temperature dependence of rho- and a_1-meson masses and mixing of vector and axial-vector correlators

M. Urban, M. Buballa, J. Wambach

Within a chiral model which provides a good description of the properties of $\rho$ and $a_1$ mesons in vacuum, it is shown that, to order $T^2$, the $\rho$- and $a_1$-meson masses remai…