Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

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]

To Generate a poster for this seminar : [ Postscript | PDF ]

[ Annonces ]    [ Abonnements ]    [ Archive ]    [ Aide ]    [ ]
[ English version ]