U(1) Charges and Moduli in the D1-D5 System
High Energy Physics - Theory
2010-11-19 v2
Abstract
The decoupling limit of the D1-D5 system compactified on T^4\times S^1 has a rich spectrum of U(1) charged excitations. Even though these states are not BPS in the limit, BPS considerations determine the mass and the semiclassical entropy for a given charge vector. The dependence of the mass formula on the compactification moduli situates the symmetric orbifold Sym^N(T^4) x T^4 conformal field theory in the moduli space. A detailed analysis of the global identifications of the moduli space yields a picture of multiple weak-coupling limits - one for each factorization of N into D1 and D5 charges d1 and d5=N/d1 - joined through regions of strong coupling in the CFT moduli space.
Cite
@article{arxiv.hep-th/9905064,
title = {U(1) Charges and Moduli in the D1-D5 System},
author = {Finn Larsen and Emil Martinec},
journal= {arXiv preprint arXiv:hep-th/9905064},
year = {2010}
}
Comments
39 pages, 1 figure; v2: ref added, typos corrected