Time evolution of linearized gauge field fluctuations on a real-time lattice

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http://hdl.handle.net/10138/174153

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Kurkela , A , Lappi , T & Peuron , J 2016 , ' Time evolution of linearized gauge field fluctuations on a real-time lattice ' European Physical Journal C. Particles and Fields , vol. 76 , no. 12 , 688 , pp. 688 . DOI: 10.1140/epjc/s10052-016-4523-9

Titel: Time evolution of linearized gauge field fluctuations on a real-time lattice
Författare: Kurkela, A.; Lappi, T.; Peuron, J.
Medarbetare: University of Helsinki, Department of Physics (-2009)
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
Datum: 2016-12
Språk: eng
Sidantal: 8
Tillhör serie: European Physical Journal C. Particles and Fields
ISSN: 1434-6044
Permanenta länken (URI): http://hdl.handle.net/10138/174153
Abstrakt: Classical real-time lattice simulations play an important role in understanding non-equilibrium phenomena in gauge theories and are used in particular to model the prethermal evolution of heavy-ion collisions. Due to instabilities, small quantum fluctuations on top of the classical background may significantly affect the dynamics of the system. In this paper we argue for the need for a numerical calculation of a system of classical gauge fields and small linearized fluctuations in a way that keeps the separation between the two manifest. We derive and test an explicit algorithm to solve these equations on the lattice, maintaining gauge invariance and Gauss' law.
Subject: 114 Physical sciences
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