The phases of 2D NCOS

Details The phases of 2D NCOS The phases of 2D NCOS

2000-08-08

arxiv.org/abs/hep-th/0008073v3

JHEP 0009 (2000) 025

Physics

High Energy Physics

High Energy Physics - Theory

27 pages, 4 figures; v2: reference added; v3: error in argument on page 6 corrected

Scientific paper

10.1088/1126-6708/2000/09/025

We study the phases of the 1+1 dimensional Non-Commutative Open String theory on a circle. We find that the length scale of non-commutativity increases at strong coupling, the coupling in turn being dressed by a power of D-string charge. The system is stringy at around this length scale, with dynamics involving an interplay between the open and wrapped closed strings sectors. Above this energy scale and at strong coupling, and below it at weak coupling, the system acquires a less stringy character. The near horizon geometry of the configuration exhibits several intriguing features, such as a flip in the dilaton field and the curvature scale, reflecting UV-IR mixing in non-commutative dynamics. Two special points in the parameter measuring the size of the circle are also identified.

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