Resummed hydrodynamic expansion for a plasma of particles interacting with fields

Journal Article · Mon Jan 07 00:00:00 EST 2019 · Physical Review D

DOI:https://doi.org/10.1103/PhysRevD.99.016009· OSTI ID:1489846

Tinti, L.; Vujanovic, G.; Noronha, J.; Heinz, U.

A novel description of kinetic theory dynamics is proposed in terms of resummed moments that embed information of both hydrodynamic and nonhydrodynamic modes. The resulting expansion can be used to extend hydrodynamics to higher orders in a consistent and numerically efficient way; at lowest order it reduces to an Israel-Stewart-like theory. This formalism is especially suited to investigate the general problem of particles interacting with fields. We tested the accuracy of this approach against the exact solution of the coupled Boltzmann-Vlasov-Maxwell equations for a plasma in an electromagnetic field undergoing Bjorken-like expansion, including extreme cases characterized by large deviations from local equilibrium and large electric fields. We show that this new resummed method maintains the fast convergence of the traditional method of moments. We also find a new condition, unrelated to Knudsen numbers and pressure corrections, that justifies the truncation of the series even in situations far from local thermal equilibrium.

• Research Organization: The Ohio State Univ., Columbus, OH (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP)
• Grant/Contract Number: SC0004286
• OSTI ID: 1489846
• Alternate ID(s): OSTI ID: 1604309
• Journal Information: Physical Review D, Journal Name: Physical Review D Vol. 99 Journal Issue: 1; ISSN 2470-0010
• Publisher: American Physical Society (APS)
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS