arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 0903.3946hep-phhep-thnucl-th
收藏

夸克-胶子等离子体的谱求和规则

Spectral sum rules for the quark-gluon plasma

Paul Romatschke, Dam Thanh Son

摘要:

我们导出了N=4的超杨-米尔斯理论和纯杨-米尔斯理论中应力-能量张量谱密度的求和规则。求和规则来自于小动量时的流体动力学行为和大动量时的共形(在N=4 SYM理论的情况下)或渐近自由(如纯杨-米尔斯理论)行为。这些求和规则有助于约束由格点量子色动力学得到的QGP输运系数。

英文摘要:

We derive sum rules involving the spectral density of the stress-energy tensor in N=4 super-Yang-Mills theory and pure Yang-Mills theory. The sum rules come from the hydrodynamic behavior at small momenta and the conformal (in the case of N=4 SYM theory) or asymptotically free (as for the pure Yang-Mills theory) behavior at large momenta. These sum rules may help constrain QGP transport coefficients obtained from lattice QCD.

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。

↑