Renormalization group and nonequilibrium action in stochastic field theory

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We investigate the renormalization group approach to nonequilibrium field theory. We show that it is possible to derive nontrivial renormalization group flow from iterative coarse graining of a closed-time-path action. This renormalization group is different from the usual in quantum field theory te...

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Autores principales: Zanella, J., Calzetta, E.
Formato: JOUR
Materias:
Anisotropy
Cameras
Charge coupled devices
Electric conductivity
Electric field effects
Electric potential
Electrodes
Electrolysis
Isotropic instability
Optical stripes
Polymer spacers
Williams domain (WD)
Nematic liquid crystals
article
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_1063651X_v66_n3_p_Zanella
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_1063651X_v66_n3_p_Zanella2023-10-03T16:01:41Z Renormalization group and nonequilibrium action in stochastic field theory Zanella, J. Calzetta, E. Anisotropy Cameras Charge coupled devices Electric conductivity Electric field effects Electric potential Electrodes Electrolysis Isotropic instability Optical stripes Polymer spacers Williams domain (WD) Nematic liquid crystals article We investigate the renormalization group approach to nonequilibrium field theory. We show that it is possible to derive nontrivial renormalization group flow from iterative coarse graining of a closed-time-path action. This renormalization group is different from the usual in quantum field theory textbooks, in that it describes nontrivial noise and dissipation. We work out a specific example where the variation of the closed-time-path action leads to the so-called Kardar-Parisi-Zhang equation, and show that the renormalization group obtained by coarse graining this action, agrees with the dynamical renormalization group derived by directly coarse graining the equations of motion. © 2002 The American Physical Society. Fil:Calzetta, E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_1063651X_v66_n3_p_Zanella
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Anisotropy
Cameras
Charge coupled devices
Electric conductivity
Electric field effects
Electric potential
Electrodes
Electrolysis
Isotropic instability
Optical stripes
Polymer spacers
Williams domain (WD)
Nematic liquid crystals
article
spellingShingle Anisotropy
Cameras
Charge coupled devices
Electric conductivity
Electric field effects
Electric potential
Electrodes
Electrolysis
Isotropic instability
Optical stripes
Polymer spacers
Williams domain (WD)
Nematic liquid crystals
article
Zanella, J.
Calzetta, E.
Renormalization group and nonequilibrium action in stochastic field theory
topic_facet Anisotropy
Cameras
Charge coupled devices
Electric conductivity
Electric field effects
Electric potential
Electrodes
Electrolysis
Isotropic instability
Optical stripes
Polymer spacers
Williams domain (WD)
Nematic liquid crystals
article
description We investigate the renormalization group approach to nonequilibrium field theory. We show that it is possible to derive nontrivial renormalization group flow from iterative coarse graining of a closed-time-path action. This renormalization group is different from the usual in quantum field theory textbooks, in that it describes nontrivial noise and dissipation. We work out a specific example where the variation of the closed-time-path action leads to the so-called Kardar-Parisi-Zhang equation, and show that the renormalization group obtained by coarse graining this action, agrees with the dynamical renormalization group derived by directly coarse graining the equations of motion. © 2002 The American Physical Society.
format JOUR
author Zanella, J.
Calzetta, E.
author_facet Zanella, J.
Calzetta, E.
author_sort Zanella, J.
title Renormalization group and nonequilibrium action in stochastic field theory
title_short Renormalization group and nonequilibrium action in stochastic field theory
title_full Renormalization group and nonequilibrium action in stochastic field theory
title_fullStr Renormalization group and nonequilibrium action in stochastic field theory
title_full_unstemmed Renormalization group and nonequilibrium action in stochastic field theory
title_sort renormalization group and nonequilibrium action in stochastic field theory
url http://hdl.handle.net/20.500.12110/paper_1063651X_v66_n3_p_Zanella
work_keys_str_mv AT zanellaj renormalizationgroupandnonequilibriumactioninstochasticfieldtheory
AT calzettae renormalizationgroupandnonequilibriumactioninstochasticfieldtheory
_version_ 1807321236446904320

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