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Protected string spectrum in AdS3/CFT2 from worldsheet integrability

Baggio, M, Sax, OO, Sfondrini, A, Stefanski jr, F and Torrielli, Alessandro (2017) Protected string spectrum in AdS3/CFT2 from worldsheet integrability Journal of High Energy Physics, 91.

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Abstract

We derive the protected closed-string spectra of AdS3/CFT2 dual pairs with 16 supercharges at arbitrary values of the string tension and of the three-form fluxes. These follow immediately from the all-loop Bethe equations for the spectra of the integrable worldsheet theories. Further, representing the underlying integrable systems as spin chains, we find that their dynamics involves length-changing interactions and that protected states correspond to gapless excitations above the Berenstein-Maldacena-Nastase vacuum. In the case of AdS3 × S 3 × T 4 the degeneracies of such operators precisely match those of the dual CFT2 and the supergravity spectrum. On the other hand, we find that for AdS3 × S 3 × S 3 × S 1 there are fewer protected states than previous supergravity calculations had suggested. In particular, protected states have the same su(2) charge with respect to the two three-spheres.

Item Type: Article
Subjects : Mathematics
Divisions : Faculty of Engineering and Physical Sciences > Mathematics
Authors :
NameEmailORCID
Baggio, MUNSPECIFIEDUNSPECIFIED
Sax, OOUNSPECIFIEDUNSPECIFIED
Sfondrini, AUNSPECIFIEDUNSPECIFIED
Stefanski jr, FUNSPECIFIEDUNSPECIFIED
Torrielli, Alessandroa.torrielli@surrey.ac.ukUNSPECIFIED
Date : 14 April 2017
Identification Number : 10.1007/JHEP04(2017)091
Copyright Disclaimer : Copyright 2017 The Author(s). Published under a Creative Commons 4.0 license
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 06 Apr 2017 11:17
Last Modified : 20 Jul 2017 10:30
URI: http://epubs.surrey.ac.uk/id/eprint/813973

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