Transient oscillations in a macroscopic effective theory of the Boltzmann equation
Abstract
A new transient effective theory of the relativistic Boltzmann equation is derived for locally momentum-anisotropic systems. In the expansion of the distribution function around a local “quasi-equilibrium” state, a nonhydrodynamic dynamical degree of freedom is introduced at leading order that breaks local momentum isotropy. By replacing the deviation of the distribution function from this quasi-equilibrium state in terms of moments of the leading-order distribution and applying a systematic power-counting scheme that orders the nonhydrodynamic modes by their microscopic time scales, a closed set of equations for the dynamical degrees of freedom is obtained. Truncating this set at the level of the slowest nonhydroynamic mode, we find that it exhibits transient oscillatory behavior—a phenomenon previously found only in strongly coupled theories, where it appears to be generic. In weakly coupled systems described by the Boltzmann equation, these transient oscillations depend on the breaking of local momentum isotropy being treated nonperturbatively at leading order in the expansion of the distribution function.
- Authors:
-
- The Ohio State Univ., Columbus, OH (United States). Dept. of Physics
- Publication Date:
- Research Org.:
- The Ohio State Univ., Columbus, OH (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- OSTI Identifier:
- 1604418
- Alternate Identifier(s):
- OSTI ID: 1236544
- Grant/Contract Number:
- SC0004286
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review D
- Additional Journal Information:
- Journal Volume: 93; Journal Issue: 3; Journal ID: ISSN 2470-0010
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS
Citation Formats
Bazow, Dennis, Martinez, Mauricio, and Heinz, Ulrich. Transient oscillations in a macroscopic effective theory of the Boltzmann equation. United States: N. p., 2016.
Web. doi:10.1103/PhysRevD.93.034002.
Bazow, Dennis, Martinez, Mauricio, & Heinz, Ulrich. Transient oscillations in a macroscopic effective theory of the Boltzmann equation. United States. https://doi.org/10.1103/PhysRevD.93.034002
Bazow, Dennis, Martinez, Mauricio, and Heinz, Ulrich. Mon .
"Transient oscillations in a macroscopic effective theory of the Boltzmann equation". United States. https://doi.org/10.1103/PhysRevD.93.034002. https://www.osti.gov/servlets/purl/1604418.
@article{osti_1604418,
title = {Transient oscillations in a macroscopic effective theory of the Boltzmann equation},
author = {Bazow, Dennis and Martinez, Mauricio and Heinz, Ulrich},
abstractNote = {A new transient effective theory of the relativistic Boltzmann equation is derived for locally momentum-anisotropic systems. In the expansion of the distribution function around a local “quasi-equilibrium” state, a nonhydrodynamic dynamical degree of freedom is introduced at leading order that breaks local momentum isotropy. By replacing the deviation of the distribution function from this quasi-equilibrium state in terms of moments of the leading-order distribution and applying a systematic power-counting scheme that orders the nonhydrodynamic modes by their microscopic time scales, a closed set of equations for the dynamical degrees of freedom is obtained. Truncating this set at the level of the slowest nonhydroynamic mode, we find that it exhibits transient oscillatory behavior—a phenomenon previously found only in strongly coupled theories, where it appears to be generic. In weakly coupled systems described by the Boltzmann equation, these transient oscillations depend on the breaking of local momentum isotropy being treated nonperturbatively at leading order in the expansion of the distribution function.},
doi = {10.1103/PhysRevD.93.034002},
journal = {Physical Review D},
number = 3,
volume = 93,
place = {United States},
year = {Mon Feb 01 00:00:00 EST 2016},
month = {Mon Feb 01 00:00:00 EST 2016}
}
Web of Science
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Works referencing / citing this record:
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