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Macroscopic (and microscopic) massless modes

Macroscopic (and microscopic) massless modes
Macroscopic (and microscopic) massless modes
We study certain spinning strings exploring the flat directions of AdS3 x S3 x S3 x S1, the massless sector cousins of su(2) and sl(2) sector spinning strings. We describe these, and their vibrational modes, using the D(2,1;\alpha)^2 algebraic curve. By exploiting a discrete symmetry of this structure which reverses the direction of motion on the spheres, and alters the masses of the fermionic modes s \to 1-s, we find out how to treat the massless fermions which were previously missing from this formalism. We show that folded strings behave as a special case of circular strings, in a sense which includes their mode frequencies, and we are able to recover this fact in the worldsheet formalism. We use these frequencies to calculate one-loop corrections to the energy, with a version of the Beisert-Tseytlin resummation.
hep-th
75-107
Abbott, Michael C.
7766a6bf-6b30-449c-b047-21a05897f6bb
Aniceto, Inês
0061ca0c-1ad8-4510-9b12-008e5c27a7ea
Abbott, Michael C.
7766a6bf-6b30-449c-b047-21a05897f6bb
Aniceto, Inês
0061ca0c-1ad8-4510-9b12-008e5c27a7ea

Abbott, Michael C. and Aniceto, Inês (2015) Macroscopic (and microscopic) massless modes. Nuclear Physics B, 894, 75-107. (doi:10.1016/j.nuclphysb.2015.02.022).

Record type: Article

Abstract

We study certain spinning strings exploring the flat directions of AdS3 x S3 x S3 x S1, the massless sector cousins of su(2) and sl(2) sector spinning strings. We describe these, and their vibrational modes, using the D(2,1;\alpha)^2 algebraic curve. By exploiting a discrete symmetry of this structure which reverses the direction of motion on the spheres, and alters the masses of the fermionic modes s \to 1-s, we find out how to treat the massless fermions which were previously missing from this formalism. We show that folded strings behave as a special case of circular strings, in a sense which includes their mode frequencies, and we are able to recover this fact in the worldsheet formalism. We use these frequencies to calculate one-loop corrections to the energy, with a version of the Beisert-Tseytlin resummation.

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More information

Accepted/In Press date: 23 February 2015
e-pub ahead of print date: 2 March 2015
Published date: May 2015
Keywords: hep-th

Identifiers

Local EPrints ID: 424141
URI: https://eprints.soton.ac.uk/id/eprint/424141
PURE UUID: 36695f44-a7f4-4911-ad9b-262f2c84182a

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Date deposited: 05 Oct 2018 11:30
Last modified: 01 Nov 2018 17:30

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Contributors

Author: Michael C. Abbott
Author: Inês Aniceto

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