Large-N limit of non-commutative gauge theories
Using the correspondence between gauge theories and string theory in curved backgrounds, we investigate aspects of the large-N limit of non-commutative gauge theories by considering gravity solutions with B fields. We argue that the total number of physical degrees of freedom at any given scale coin...
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1999
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Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10298479_v3_n9_pXXXV_Maldacena http://hdl.handle.net/20.500.12110/paper_10298479_v3_n9_pXXXV_Maldacena |
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paper:paper_10298479_v3_n9_pXXXV_Maldacena2023-06-08T16:00:23Z Large-N limit of non-commutative gauge theories Black holes in string theory Brane dynamics in gauge theories Duality in gauge field theories Using the correspondence between gauge theories and string theory in curved backgrounds, we investigate aspects of the large-N limit of non-commutative gauge theories by considering gravity solutions with B fields. We argue that the total number of physical degrees of freedom at any given scale coincides with the commutative case. We then compute a two-point correlation function involving momentum components in the directions of the B-field. In the infrared regime it reproduces the usual behavior of the commutative gauge theory (i.e. of the form k 4 log k 2 ). In the UV regime, we find that the two-point function decays exponentially with the momentum. A calculation of Wilson lines suggests that strings cannot be localized near the boundary. We also find string configurations that are localized in a finite region of the radial direction. These are worldsheet instantons. 1999 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10298479_v3_n9_pXXXV_Maldacena http://hdl.handle.net/20.500.12110/paper_10298479_v3_n9_pXXXV_Maldacena |
institution |
Universidad de Buenos Aires |
institution_str |
I-28 |
repository_str |
R-134 |
collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
topic |
Black holes in string theory Brane dynamics in gauge theories Duality in gauge field theories |
spellingShingle |
Black holes in string theory Brane dynamics in gauge theories Duality in gauge field theories Large-N limit of non-commutative gauge theories |
topic_facet |
Black holes in string theory Brane dynamics in gauge theories Duality in gauge field theories |
description |
Using the correspondence between gauge theories and string theory in curved backgrounds, we investigate aspects of the large-N limit of non-commutative gauge theories by considering gravity solutions with B fields. We argue that the total number of physical degrees of freedom at any given scale coincides with the commutative case. We then compute a two-point correlation function involving momentum components in the directions of the B-field. In the infrared regime it reproduces the usual behavior of the commutative gauge theory (i.e. of the form k 4 log k 2 ). In the UV regime, we find that the two-point function decays exponentially with the momentum. A calculation of Wilson lines suggests that strings cannot be localized near the boundary. We also find string configurations that are localized in a finite region of the radial direction. These are worldsheet instantons. |
title |
Large-N limit of non-commutative gauge theories |
title_short |
Large-N limit of non-commutative gauge theories |
title_full |
Large-N limit of non-commutative gauge theories |
title_fullStr |
Large-N limit of non-commutative gauge theories |
title_full_unstemmed |
Large-N limit of non-commutative gauge theories |
title_sort |
large-n limit of non-commutative gauge theories |
publishDate |
1999 |
url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10298479_v3_n9_pXXXV_Maldacena http://hdl.handle.net/20.500.12110/paper_10298479_v3_n9_pXXXV_Maldacena |
_version_ |
1768545703002374144 |