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arXiv 1203.3544hep-th
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平衡配分函数对流体动力学的约束

Constraints on Fluid Dynamics from Equilibrium Partition Functions

Nabamita Banerjee, Jyotirmoy Bhattacharya, Sayantani Bhattacharyya, Sachin Jain, Shiraz Minwalla, Tarun Sharma

摘要:

本文研究了在任意定态背景时空和任意定态背景规范场下的量子场论在长波展开下的热配分函数。我们证明,相对论流体力学方程组显着约束的要求与任何配分函数的一致性。在低阶导数展开的例子中,我们证明了这些约束恰好与流体动力学输运系数之间的等式相吻合,这些等式是从热力学第二定律的局部形式得出的。特别是,我们恢复的儿子和Surowka的手征磁场和手征涡度流的结果,从一个本地配分函数,显然再现的场论异常,而不作任何参考熵流。我们推测,输运系数之间的关系,遵循热力学第二定律同意在本文所描述的约束的导数展开的所有订单。

英文摘要:

We study the thermal partition function of quantum field theories on arbitrary stationary background spacetime, and with arbitrary stationary background gauge fields, in the long wavelength expansion. We demonstrate that the equations of relativistic hydrodynamics are significantly constrained by the requirement of consistency with any partition function. In examples at low orders in the derivative expansion we demonstrate that these constraints coincide precisely with the equalities between hydrodynamical transport coefficients that follow from the local form of the second law of thermodynamics. In particular we recover the results of Son and Surowka on the chiral magnetic and chiral vorticity flows, starting from a local partition function that manifestly reproduces the field theory anomaly, without making any reference to an entropy current. We conjecture that the relations between transport coefficients that follow from the second law of thermodynamics agree to all orders in the derivative expansion with the constraints described in this paper.

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