Hadronic spectral functions above the QCD phase transition

被引:106
作者
Asakawa, M [1 ]
Hatsuda, T
Nakahara, Y
机构
[1] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan
[2] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan
[3] Nagoya Univ, Dept Phys, Nagoya, Aichi 4648602, Japan
关键词
D O I
10.1016/S0375-9474(02)01526-9
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
We extract the spectral functions in the scalar, pseudo-scalar, vector, and axial-vector channels above the deconfinement phase transition temperature (T,) using the maximum entropy method (MEM). We use anisotropic lattices, 32(3) x 32, 40, 54, 72, 80, and 96 (corresponding to T = 2.3T(c) --> 0.8T(c)), with the renormalized anisotropy xi = 4.0 to have enough temporal data points to carry out the MEM analysis. Our result suggests that the spectral functions continue to possess non-trivial structures even above T, and in addition that there is a qualitative change in the state of the deconfined matter between 1.5T(c) and 2 T-c.
引用
收藏
页码:863C / 866C
页数:4
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