Studying the validity of relativistic hydrodynamics with a new exact solution of the Boltzmann equation
Journal Article
·
· Physical Review. D, Particles, Fields, Gravitation and Cosmology
- McGill Univ., Montreal, QC (Canada); The Ohio State University
- The Ohio State Univ., Columbus, OH (United States)
- Univ. de Sao Paulo (Brazil)
- Kent State Univ., Kent, OH (United States)
We present an exact solution to the Boltzmann equation which describes a system undergoing boost-invariant longitudinal and azimuthally symmetric radial expansion for arbitrary shear viscosity to entropy density ratio. This new solution is constructed by considering the conformal map between Minkowski space and the direct product of three-dimensional de Sitter space with a line. The resulting solution respects $$SO(3)_q\otimes SO(1,1)\otimes Z_2$$ symmetry. We compare the exact kinetic solution with exact solutions of the corresponding macroscopic equations that were obtained from the kinetic theory in ideal and second-order viscous hydrodynamic approximations. The macroscopic solutions are obtained in de Sitter space and are subject to the same symmetries used to obtain the exact kinetic solution.
- Research Organization:
- The Ohio State Univ., Columbus, OH (United States)
- Sponsoring Organization:
- USDOE; USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
- Grant/Contract Number:
- AC02-05CH11231; SC0004104; SC0004286
- OSTI ID:
- 1604537
- Alternate ID(s):
- OSTI ID: 1181197
- Journal Information:
- Physical Review. D, Particles, Fields, Gravitation and Cosmology, Journal Name: Physical Review. D, Particles, Fields, Gravitation and Cosmology Journal Issue: 12 Vol. 90; ISSN PRVDAQ; ISSN 1550-7998
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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