From UV/IR mixing to closed strings

Details From UV/IR mixing to closed strings From UV/IR mixing to closed strings

2003-07-21

arxiv.org/abs/hep-th/0307196v2

JHEP 0309 (2003) 033

Physics

High Energy Physics

High Energy Physics - Theory

28 pages, 4 figures, LaTex; v2 references added, misprints corrected

Scientific paper

10.1088/1126-6708/2003/09/033

It was shown in hep-th/0301099 that the leading UV/IR mixing effects in noncommutative gauge theories on D-branes are able to capture information about the closed string spectrum of the parent string theory. The analysis was carried out for D-branes on nonsupersymmetric C^3/Z_N orbifolds of Type IIB. In this paper we consider D-branes on twisted circles compactifications of Type II string theory. We find that the signs of the leading UV/IR mixing effects know about the mass gap between the lowest modes in NSNS and RR closed string towers. Moreover, the relevant piece of the field theory effective action can be reproduced purely in the language of closed strings. Remarkably this approach unifies in a single structure, that of a closed string exchange between D-branes, both the leading planar and nonplanar effects associated to the absence of supersymmetry.

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