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arXiv 0910.0099hep-phnucl-th
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夸克-胶子介质的方程、色介电常数和不稳定性

Equations, chromopermittivity and instabilities of the quark-gluon medium

I. M. Dremin

摘要:

在高能下考虑了QCD方程描述的夸克胶子介质。在线性响应理论的假设下,引入了介质的色介电常数,并认为在TeV能量下它超过1。色散方程表明,介质的固有模显示出不稳定性,穿过介质的部分子流引起切伦科夫胶子的发射。它们的分布在LHC可以不同于那些典型的较低能量的RHIC,因为它们是由高能量依赖的色介电常数,而后者的出现是由于集体共振激发。讨论了切伦科夫胶子与马赫波的区别。

英文摘要:

The quark-gluon medium described by QCD equations is considered at high energies. Within the assumptions of the linear response theory the chromopermittivity of the medium is introduced and it is argued that it exceeds 1 at TeV energies. The dispersion equations show that the proper modes of the medium reveal instability and the parton currents traversing it induce the emission of Cherenkov gluons. Their distributions at LHC can differ from those typical for lower energies of RHIC because they are determined by the high energy dependence of the chromopermittivity while the latter ones arise due to collective resonance excitations. The distinction between Cherenkov gluons and Mach waves is discussed.

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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