Status | Confirmed |
Seminar Series | RENC-THEO |
Subjects | hep-th |
Date | Thursday 20 December 2018 |
Time | 10:00 |
Institute | IHP |
Seminar Room | 201 |
Speaker's Last Name | Gaberdiel |
Speaker's First Name | Matthias |
Speaker's Email Address | |
Speaker's Institution | ETH Zuerich |
Title | The worldsheet dual of the symmetric orbifold CFT |
Abstract | Superstring theory on AdS3×S3×T4 with the smallest amount of NS-NS flux (k = 1) is shown to be dual to the spacetime CFT given by the large N limit of the free symmetric product orbifold Sym_N (T4). To define the worldsheet theory at k = 1, we employ the hybrid formalism in which the AdS3×S3 part is described by the psu(1, 1|2)_1 WZW model (which is well defined). Unlike the case for k ≥ 2, it turns out that the string spectrum at k = 1 does not exhibit the long string continuum, and perfectly matches with the large N limit of the symmetric product. We also demonstrate that the fusion rules of the symmetric orbifold are reproduced from the worldsheet perspective. Our proposal therefore affords a tractable worldsheet description of a tensionless limit in string theory, for which the dual CFT is also explicitly known. |
arXiv Preprint Number | |
Comments | [based on joint work with Lorenz Eberhardt and Rajesh Gopakumar] |
Attachments |
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