From UV/IR mixing to closed strings

Abstract

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.

IR dynamics from UV divergences: UV/IR mixing, NCFT, and the hierarchy problem

“…[53][54][55][56][57]), mimicking the behavior of extended objects, but there have been many hints in the spacelike theories that the curious IR effects in the NCFT are reproducing effects from closed strings, despite the fact that these have been decoupled (e.g. [37,52,[58][59][60][61][62][63][64][65]).…”

Effective actions, Wilson lines and the IR/UV mixing in noncommutative supersymmetric gauge theories

“…In section 5 we compare the perturbative results derived in section 4 to the result obtained in section 2 from the effective action, finding agreement. For other related work on noncommutative theories, see [7,8,[27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44] and references therein.…”