Vector-Axialvector Mixing in Hot Matter and Its Hadronic Effective Field Theory Description(RHIC Phenomenology/Theory,New Frontiers in QCD 2008-Fundamental Problems in Hot and/or Dense Matter-)
We discuss the importance of the axialvector meson in chiral phase transition at finite temperature. We show that there exists a significant contribution in the vector spectral function from the axialvector meson through the vector-axialvector mixing in hot matter.