Shear viscosity of the $\Phi^4$ theory from classical simulation
Shear viscosity of the $\Phi^4$ theory from classical simulation
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经典模拟中 $Phi^4$ 理论的剪切粘度
DOI：
10.1103/physrevd.92.105011
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发表时间：
2015
影响因子：
5
通讯作者：
A. Jakovác
中科院分区：
文献类型：
--
作者：
M. M. Homor;A. Jakovác
用经典微正则模拟测量了经典$\Phi^4 $理论的剪切粘度。为了计算久保公式，我们测量能量-动量张量相关函数，并应用格林-久保关系。作为一个经典理论，结果取决于在温度范围内应选择的截止。与实验访问系统的比较也进行。
Shear viscosity of the classical $\Phi^4$ theory is measured using classical microcanonical simulation. To calculate the Kubo formula, we measure the energy-momentum tensor correlation function, and apply the Green-Kubo relation. Being a classical theory, the results depend on the cutoff which should be chosen in the range of the temperature. Comparison with experimentally accessible systems is also performed.