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arXiv 2009.01356hep-thcond-mat.stat-mechhep-phmath-phmath.MPphysics.flu-dyn
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流体力学的非普适性

Non-universality of hydrodynamics

Akash Jain, Pavel Kovtun

摘要:

我们使用Schwinger-Keldysh有效场论研究了随机相互作用对流体动力关联函数的影响。我们确定了新的“随机输运系数”,是不可见的经典本构关系,但影响后期的行为,通过循环校正的流体力学关联函数。这些结果表明,经典的输运系数不提供一个普遍的特征的长距离,晚时间的相关性,即使在波动的流体力学框架内。

英文摘要:

We investigate the effects of stochastic interactions on hydrodynamic correlation functions using the Schwinger-Keldysh effective field theory. We identify new "stochastic transport coefficients" that are invisible in the classical constitutive relations, but nonetheless affect the late-time behaviour of hydrodynamic correlation functions through loop corrections. These results indicate that classical transport coefficients do not provide a universal characterisation of long-distance, late-time correlations even within the framework of fluctuating hydrodynamics.

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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