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Abstract:

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 behaviour of the commutative gauge theory (i.e. of the form k4 log k2). In the ultraviolet 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.

Registro:

Documento: Artículo
Título:Large-N limit of non-commutative gauge theories
Autor:Maldacena, J.M.; Russo, J.G.
Filiación:Department of Physics, Harvard University, Cambridge, MA 02138, United States
Departamento de Física, Universidad de Buenos Aires, Ciudad Universitaria, 1428 Buenos Aires, Argentina
Año:2000
Volumen:17
Número:5
Página de inicio:1189
Página de fin:1203
DOI: http://dx.doi.org/10.1088/0264-9381/17/5/328
Título revista:Classical and Quantum Gravity
Título revista abreviado:Classical Quantum Gravity
ISSN:02649381
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02649381_v17_n5_p1189_Maldacena

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Citas:

---------- APA ----------
Maldacena, J.M. & Russo, J.G. (2000) . Large-N limit of non-commutative gauge theories. Classical and Quantum Gravity, 17(5), 1189-1203.
http://dx.doi.org/10.1088/0264-9381/17/5/328
---------- CHICAGO ----------
Maldacena, J.M., Russo, J.G. "Large-N limit of non-commutative gauge theories" . Classical and Quantum Gravity 17, no. 5 (2000) : 1189-1203.
http://dx.doi.org/10.1088/0264-9381/17/5/328
---------- MLA ----------
Maldacena, J.M., Russo, J.G. "Large-N limit of non-commutative gauge theories" . Classical and Quantum Gravity, vol. 17, no. 5, 2000, pp. 1189-1203.
http://dx.doi.org/10.1088/0264-9381/17/5/328
---------- VANCOUVER ----------
Maldacena, J.M., Russo, J.G. Large-N limit of non-commutative gauge theories. Classical Quantum Gravity. 2000;17(5):1189-1203.
http://dx.doi.org/10.1088/0264-9381/17/5/328