Zero mode in a strongly coupled quark gluon plasma
Zero mode in a strongly coupled quark gluon plasma
复制标题
强耦合夸克胶子等离子体中的零模式
DOI:
10.1103/physrevd.89.076009
复制
发表时间:
2014-01
期刊:
影响因子:
--
通讯作者:
Schmidt, Sebastian M.
中科院分区:
文献类型:
--
作者:
Qin, Si-Xue;Liu, Yu-Xin;Roberts, Craig D.;Schmidt, Sebastian M.
In connection with massless two-flavour QCD, we analyse the chiral symmetry restoring phase transition using three distinct gluon-quark vertices and two different assumptions about the long-range part of the quark-quark interaction. In each case, we solve the gap equation, locate the transition temperature T_c, and use the maximum entropy method to extract the dressed-quark spectral function at T>T_c. Our best estimate for the chiral transition temperature is T_c=(147 +/- 8)MeV; and the deconfinement transition is coincident. For temperatures markedly above T_c, we find a spectral density that is consistent with those produced using a hard thermal loop expansion, exhibiting both a normal and plasmino mode. On a domain T\in[T_c,T_s], with T_s approximately 1.5T_c, however, with each of the six kernels we considered, the spectral function contains a significant additional feature. Namely, it displays a third peak, associated with a zero mode, which is essentially nonperturbative in origin and dominates the spectral function at T=T_c. We suggest that the existence of this mode is a signal for the formation of a strongly-coupled quark-gluon plasma and that this strongly-interacting state of matter is likely a distinctive feature of the QCD phase transition.
登录
查看更多内容
DOI:
--
发表时间:
1993
期刊:
--
影响因子:
--
作者:
G. Efimov;M. Ivanov
通讯作者:
G. Efimov;M. Ivanov
DOI:
10.1142/5293
发表时间:
2003-08
期刊:
--
影响因子:
--
作者:
N. Brambilla;G. Prosperi
通讯作者:
N. Brambilla;G. Prosperi
DOI:
10.2307/2223083
发表时间:
1921-12
期刊:
--
影响因子:
--
作者:
J. Keynes
通讯作者:
J. Keynes
DOI:
--
发表时间:
1996-09
期刊:
--
影响因子:
--
作者:
C. Roberts
通讯作者:
C. Roberts