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arXiv 1007.4452hep-th
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(2+1)d共形流体中的涡旋

Vortices in (2+1)d Conformal Fluids

Jarah Evslin, Chethan Krishnan

摘要:

本文研究了(2+1)维粘性共形流体中孤立的、定常的、轴对称的涡旋解。描述它们的方程可以转化为径向速度、旋转速度和温度的三个耦合一阶常微分方程的形式。它们有一个丰富的空间的解决方案,其特点是径向能量和角动量通量。我们做了详细的研究,在单参数家庭的解决方案,没有能量通量的阶段。这个参数是渐近涡度和温度的乘积。当它很大时,径向流体速度在有限的内半径处达到光速。当它低于一个临界值时,速度处处有界,但在原点处有一个不连续。我们评论湍流,潜在的重力场,非粘性的限制和非相对论性的限制。

英文摘要:

We study isolated, stationary, axially symmetric vortex solutions in (2+1)-dimensional viscous conformal fluids. The equations describing them can be brought to the form of three coupled first order ODEs for the radial and rotational velocities and the temperature. They have a rich space of solutions characterized by the radial energy and angular momentum fluxes. We do a detailed study of the phases in the one-parameter family of solutions with no energy flux. This parameter is the product of the asymptotic vorticity and temperature. When it is large, the radial fluid velocity reaches the speed of light at a finite inner radius. When it is below a critical value, the velocity is everywhere bounded, but at the origin there is a discontinuity. We comment on turbulence, potential gravity duals, non-viscous limits and non-relativistic limits.

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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