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Microscopic Origin of the Shear Relaxation Time in Causal Dissipative Fluid Dynamics
- Publication Year :
- 2011
-
Abstract
- In this paper we show how to compute the shear relaxation time from an underlying microscopic theory. We prove that the shear relaxation time in Israel-Stewart-type theories is given by the inverse of the pole of the corresponding retarded Green's function, which is nearest to the origin in the complex energy plane. Consequently, the relaxation time in such theories is a microscopic, and not a macroscopic, i.e., fluid-dynamical time scale.<br />Comment: 10 pages, to appear in the proceedings of Advances in Nuclear Physics in Our Time (2010)
- Subjects :
- High Energy Physics - Theory
High Energy Physics - Phenomenology
Nuclear Theory
Subjects
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.1103.2476
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1142/9789814355766_0009