Vector-axialvector mixing in hot matter and its hadronic effective field   theory description
  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. 
C. Sasaki (TU Munich), M. Harada (Nagoya Univ.), W. Weise (TU Munich)