String theory and noncommutative geometry
Aug, 199999 pages
Published in:
- JHEP 09 (1999) 032
e-Print:
- hep-th/9908142 [hep-th]
Report number:
- IASSNS-HEP-99-74
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Abstract:
We extend earlier ideas about the appearance of noncommutative geometry in string theory with a nonzero B-field. We identify a limit in which the entire string dynamics is described by a minimally coupled (supersymmetric) gauge theory on a noncommutative space, and discuss the corrections away from this limit. Our analysis leads us to an equivalence between ordinary gauge fields and noncommutative gauge fields, which is realized by a change of variables that can be described explicitly. This change of variables is checked by comparing the ordinary Dirac-Born-Infeld theory with its noncommutative counterpart. We obtain a new perspective on noncommutative gauge theory on a torus, its T-duality, and Morita equivalence. We also discuss the D0/D4 system, the relation to M-theory in DLCQ, and a possible noncommutative version of the six-dimensional (2,0) theory.Note:
- 100 pages, sorry. Clarifications added, trivial misprints fixed and references added Report-no: IASSNS-HEP-99/74 Journal-ref: JHEP 9909 (1999) 032
- string model
- supersymmetry
- differential geometry: noncommutative
- gauge field theory: Yang-Mills
- Born-Infeld model
- soliton: BPS
- duality
- membrane model
- bibliography
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