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arXiv 0812.1130hep-ph
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热等离子体中夸克偶素关联函数的实时和虚时

Real and imaginary-time quarkonium correlators in a hot plasma

Andrea Beraudo, Jean Paul Blaizot, Claudia Ratti

摘要:

研究了用有效势描述热等离子体中$Q\overline{Q}$对行为的可能性。结果表明,只要介质效应可以体现在一个高斯行动,如在QED的情况下,$Q\overline{Q}$传播遵守一个封闭的时间演化方程的大时间行为是由一个有效的潜力。后者,除屏蔽外,还显示与碰撞有关的虚部。

英文摘要:

The possibility of describing the behavior of a $Q\overline{Q}$ pair in a hot plasma in terms of an effective potential is investigated. It is shown that as long as medium effects can be embodied in a gaussian action, like in the QED case, the $Q\overline{Q}$ propagator obeys a closed temporal evolution equation whose large-time behavior is governed by an effective potential. The latter, beside screening, displays also an imaginary part related to collisions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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