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Transport coefficients from the two particle irreducible effective action

Gert Aarts Orcid Logo, Jose M. Martínez Resco

Physical Review D, Volume: "D68", Issue: 8, Start page: 085009

Swansea University Author: Gert Aarts Orcid Logo

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DOI (Published version): 10.1103/PhysRevD.68.085009

Abstract

We show that the lowest nontrivial truncation of the two-particle irreducible (2PI) effective action correctly determines transport coefficients in a weak coupling or 1/N expansion at leading (logarithmic) order in several relativistic field theories. In particular, we consider a single real scalar...

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Published in: Physical Review D
ISSN: 0556-2821 1089-4918
Published: 2003
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URI: https://cronfa.swan.ac.uk/Record/cronfa22606
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first_indexed 2015-07-21T11:25:49Z
last_indexed 2018-02-09T05:00:56Z
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spelling 2015-07-21T11:29:13.8298016 v2 22606 2015-07-21 Transport coefficients from the two particle irreducible effective action 1ba0dad382dfe18348ec32fc65f3f3de 0000-0002-6038-3782 Gert Aarts Gert Aarts true false 2015-07-21 SPH We show that the lowest nontrivial truncation of the two-particle irreducible (2PI) effective action correctly determines transport coefficients in a weak coupling or 1/N expansion at leading (logarithmic) order in several relativistic field theories. In particular, we consider a single real scalar field with cubic and quartic interactions in the loop expansion, the O(N) model in the 2PI-1/N expansion, and QED with a single and many fermion fields. Therefore, these truncations will provide a correct description, to leading (logarithmic) order, of the long time behavior of these systems, i.e. the approach to equilibrium. This supports the promising results obtained for the dynamics of quantum fields out of equilibrium using 2PI effective action techniques. Journal Article Physical Review D "D68" 8 085009 0556-2821 1089-4918 31 3 2003 2003-03-31 10.1103/PhysRevD.68.085009 http://inspirehep.net/record/615736 @articleAarts:2003bk, author = "Aarts, Gert and Martinez Resco, Jose M.", title = "Transport coefficients from the 2PI effective action", journal = "Phys.Rev.", volume = "D68", pages = "085009", doi = "10.1103/PhysRevD.68.085009", year = "2003", eprint = "hep-ph/0303216", archivePrefix = "arXiv", primaryClass = "hep-ph", SLACcitation = "%%CITATION = HEP-PH/0303216;%%", COLLEGE NANME Physics COLLEGE CODE SPH Swansea University 2015-07-21T11:29:13.8298016 2015-07-21T10:15:02.2872045 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Gert Aarts 0000-0002-6038-3782 1 Jose M. Martínez Resco 2
title Transport coefficients from the two particle irreducible effective action
spellingShingle Transport coefficients from the two particle irreducible effective action
Gert Aarts
title_short Transport coefficients from the two particle irreducible effective action
title_full Transport coefficients from the two particle irreducible effective action
title_fullStr Transport coefficients from the two particle irreducible effective action
title_full_unstemmed Transport coefficients from the two particle irreducible effective action
title_sort Transport coefficients from the two particle irreducible effective action
author_id_str_mv 1ba0dad382dfe18348ec32fc65f3f3de
author_id_fullname_str_mv 1ba0dad382dfe18348ec32fc65f3f3de_***_Gert Aarts
author Gert Aarts
author2 Gert Aarts
Jose M. Martínez Resco
format Journal article
container_title Physical Review D
container_volume "D68"
container_issue 8
container_start_page 085009
publishDate 2003
institution Swansea University
issn 0556-2821
1089-4918
doi_str_mv 10.1103/PhysRevD.68.085009
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics
url http://inspirehep.net/record/615736
document_store_str 0
active_str 0
description We show that the lowest nontrivial truncation of the two-particle irreducible (2PI) effective action correctly determines transport coefficients in a weak coupling or 1/N expansion at leading (logarithmic) order in several relativistic field theories. In particular, we consider a single real scalar field with cubic and quartic interactions in the loop expansion, the O(N) model in the 2PI-1/N expansion, and QED with a single and many fermion fields. Therefore, these truncations will provide a correct description, to leading (logarithmic) order, of the long time behavior of these systems, i.e. the approach to equilibrium. This supports the promising results obtained for the dynamics of quantum fields out of equilibrium using 2PI effective action techniques.
published_date 2003-03-31T03:26:46Z
_version_ 1763750975885017088
score 11.035634

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