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Conference Paper/Proceeding/Abstract 860 views

Complex Langevin dynamics for SU(3) gauge theory in the presence of a theta term

Bongiovanni, Lorenzo, Aarts, Gert, , Sexty, Denes, Gert Aarts Orcid Logo

Swansea University Author: Gert Aarts Orcid Logo

Abstract

One of the yet unsolved questions of QCD in the context of the Standard Model is to explain the strong CP problem. A way to look for a better understanding of it is to investigate the theory in the presence of a non-zero topological theta term. On the lattice such a term is complex: hence it introdu...

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Published: 2014
Online Access: http://inspirehep.net/record/1325991
URI: https://cronfa.swan.ac.uk/Record/cronfa22562
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first_indexed 2015-07-21T11:25:42Z
last_indexed 2018-02-09T05:00:50Z
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spelling 2015-07-21T11:29:13.8298016 v2 22562 2015-07-21 Complex Langevin dynamics for SU(3) gauge theory in the presence of a theta term 1ba0dad382dfe18348ec32fc65f3f3de 0000-0002-6038-3782 Gert Aarts Gert Aarts true false 2015-07-21 SPH One of the yet unsolved questions of QCD in the context of the Standard Model is to explain the strong CP problem. A way to look for a better understanding of it is to investigate the theory in the presence of a non-zero topological theta term. On the lattice such a term is complex: hence it introduces a sign problem which, in general, limits the applicability of standard Monte Carlo methods. Here we will discuss the approach of complex Langevin dynamics and show results for both real and imaginary values of theta. We also report on our experience with the gradient flow for real and imaginary theta. Conference Paper/Proceeding/Abstract 30 11 2014 2014-11-30 http://inspirehep.net/record/1325991 @articleBongiovanni:2014rna, author = "Bongiovanni, Lorenzo and Aarts, Gert and Seiler, Erhard and Sexty, Denes", title = "Complex Langevin dynamics for SU(3) gauge theory in the presence of a theta term", year = "2014", eprint = "1411.0949", archivePrefix = "arXiv", primaryClass = "hep-lat", SLACcitation = "%%CITATION = ARXIV:1411.0949;%%", COLLEGE NANME Physics COLLEGE CODE SPH Swansea University 2015-07-21T11:29:13.8298016 2015-07-21T10:14:34.2538248 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Bongiovanni, Lorenzo 1 Aarts, Gert 2 3 Sexty, Denes 4 Gert Aarts 0000-0002-6038-3782 5
title Complex Langevin dynamics for SU(3) gauge theory in the presence of a theta term
spellingShingle Complex Langevin dynamics for SU(3) gauge theory in the presence of a theta term
Gert Aarts
title_short Complex Langevin dynamics for SU(3) gauge theory in the presence of a theta term
title_full Complex Langevin dynamics for SU(3) gauge theory in the presence of a theta term
title_fullStr Complex Langevin dynamics for SU(3) gauge theory in the presence of a theta term
title_full_unstemmed Complex Langevin dynamics for SU(3) gauge theory in the presence of a theta term
title_sort Complex Langevin dynamics for SU(3) gauge theory in the presence of a theta term
author_id_str_mv 1ba0dad382dfe18348ec32fc65f3f3de
author_id_fullname_str_mv 1ba0dad382dfe18348ec32fc65f3f3de_***_Gert Aarts
author Gert Aarts
author2 Bongiovanni, Lorenzo
Aarts, Gert

Sexty, Denes
Gert Aarts
format Conference Paper/Proceeding/Abstract
publishDate 2014
institution Swansea University
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/1325991
document_store_str 0
active_str 0
description One of the yet unsolved questions of QCD in the context of the Standard Model is to explain the strong CP problem. A way to look for a better understanding of it is to investigate the theory in the presence of a non-zero topological theta term. On the lattice such a term is complex: hence it introduces a sign problem which, in general, limits the applicability of standard Monte Carlo methods. Here we will discuss the approach of complex Langevin dynamics and show results for both real and imaginary values of theta. We also report on our experience with the gradient flow for real and imaginary theta.
published_date 2014-11-30T03:26:41Z
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score 11.013686

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