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arXiv 0811.4174hep-ph
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单极子在胶子等离子体中的作用

The role of monopoles in a Gluon Plasma

Claudia Ratti, Edward Shuryak

摘要:

我们研究了磁单极子在足够高的温度$T>2T_c$下的作用,当它们被认为是嵌入物质中的重的、稀有的物体时,这些物质主要由通常的“电”准粒子、夸克和胶子组成。我们回顾了有限温度下单极子的晶格结果。然后,我们继续经典和量子电荷-声子散射,解决问题的胶子-声子散射的第一次。我们发现,虽然这个过程几乎不影响热力学量,它确实产生了一个大的运输截面,显着超过pQCD胶子-胶子散射相当高的$T$。因此,尽管它们在高$T$下的密度相对较小,但单极子对QGP输运性质极其重要,保持足够小的粘度以使流体力学在LHC下工作。

英文摘要:

We study the role of magnetic monopoles at high enough temperature $T>2T_c$, when they can be considered heavy, rare objects embedded into matter consisting mostly of the usual "electric" quasiparticles, quarks and gluons. We review available lattice results on monopoles at finite temperatures. Then we proceed to classical and quantum charge-monopole scattering, solving the problem of gluon-monopole scattering for the first time. We find that, while this process hardly influences thermodynamic quantities, it does produce a large transport cross section, significantly exceeding that for pQCD gluon-gluon scattering up to quite high $T$. Thus, in spite of their relatively small density at high $T$, monopoles are extremely important for QGP transport properties, keeping viscosity small enough for hydrodynamics to work at LHC.

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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