The Large M limit of noncommutative open strings at strong coupling
Jul, 200145 pages
Published in:
- Nucl.Phys.B 621 (2002) 62-100
e-Print:
- hep-th/0107180 [hep-th]
Report number:
- CLNS-01-1747
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Abstract: (Elsevier)
Two-dimensional Non-Commutative Open String (NCOS) theory, well-defined perturbatively, may also be studied at strong coupling and for large D-string charge by making use of the Holographic duality. We analyze the zero mode dynamics of a closed string in the appropriate background geometry and map the results onto a sector of strongly coupled NCOS dynamics. We find an elaborate classical picture that shares qualitative similarities with the SL(2, R ) WZW model. In the quantum problem, we compute propagators and part of the energy spectrum of the theory; the latter involves interesting variations in the density of states as a function of the level number, and energies scaling inversely with the coupling. Finally, the geometry exhibits a near horizon throat, associated with NCOS dynamics, yet it is found that the whole space is available for Holography. This provides a setting to extend the Maldacena duality beyond the near horizon limit.Note:
- 45 pages, 7 figures
- 11.25.-w
- 11.10.Lm
- string: open
- noncommutative
- dimension: 2
- expansion: strong coupling
- duality: holography
- string: closed
- zero mode
- Wess-Zumino-Witten model: SL(2,R)
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