Quantum transport theory and nonequilibrium chiral condensates

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作者：
庄鹏飞
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Science in China,Ser.A. | 1998年 / Ser.A.1998卷 / 12期
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摘要：
Quantum transport theory and disoriented chiral condensate (DCC) in the Nambu\|Jona\|Lasinio model are investigated. The kinetic equations are derived in covariant and equal\|time formulations. It is found that DCC is closely connected with the fluctuation of quark spin density. For the longitudinally expanding system, which models a high\|energy nucleus\|nucleus collision, a DCC present initially is quickly dissolved due to the expansion and the collision processes. However, the quantum off\|shell effect leads to a strong fluctuation of DCC.
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