arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1610.00519gr-qc
收藏

局部热平衡中的相对论理想流体

Relativistic perfect fluids in local thermal equilibrium

Bartolomé Coll, Joan Josep Ferrando, Juan Antonio Sáez

摘要:

流体的每一次演化都由能量张量唯一地描述。但反过来就不对了:能量张量可以描述不同流体的演化。确定它们的问题在这里称为{ \em逆问题}。这个问题可能有非物理的或非确定性的解决方案。本文研究局部热平衡演化的理想流体中理想能量张量的反问题。起始点是先前的结果(Coll和Ferrando in J Math Phys 30:2918-2922,1989),其显示在l.t.e.承认一个纯粹的流体动力学特性。这种特性允许以非常紧凑的形式解决这个逆问题。典型的情况下,完美的能量张量代表理想气体的演变进行了详细研究,并概述了一些应用和例子。

英文摘要:

Every evolution of a fluid is uniquely described by an energy tensor. But the converse is not true: an energy tensor may describe the evolution of different fluids. The problem of determining them is called here the {\em inverse problem}. This problem may admit unphysical or non-deterministic solutions. This paper is devoted to solve the inverse problem for perfect energy tensors in the class of perfect fluids evolving in local thermal equilibrium (l.t.e.). The starting point is a previous result (Coll and Ferrando in J Math Phys 30: 2918-2922, 1989) showing that thermodynamic fluids evolving in l.t.e. admit a purely hydrodynamic characterization. This characterization allows solving this inverse problem in a very compact form. The paradigmatic case of perfect energy tensors representing the evolution of ideal gases is studied in detail and some applications and examples are outlined.

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。

↑