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 2203.04736hep-th
收藏

各向异性膨胀,从动力学理论耗散流体力学

Anisotropic expansion, dissipative hydrodynamics from kinetic theory

Priyanka Priyadarshini Pruseth, Swapna Mahapatra

摘要:

考虑Kasner时空描述流体的各向异性三维膨胀,从动力学理论出发,得到了剪切应力张量和能量密度的耗散演化方程。为此,我们使用相对论玻尔兹曼方程的迭代解与弛豫时间近似。我们证明了在Kasner时空中,在适当的各向异性参数条件下,我们对二阶和三阶演化方程的结果退化为一维展开的结果.

英文摘要:

We consider Kasner space-time describing anisotropic three dimensional expansion of the fluid and obtain the dissipative evolution equations for shear stress tensor and energy density from kinetic theory. For this, we use the iterative solution of relativistic Boltzmann equation with relaxation time approximation. We show that our results for second and third order evolution equations reduce to those of one dimensional expansion case under suitable conditions for the anisotropic parameters in Kasner space-time.

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。

↑