Lifting asymptotic degeneracies with the mirror TBA

A. Sfondrini, S.J. van Tongeren

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

We describe a qualitative feature of the AdS5 × S5 string spectrum which is not captured by the asymptotic Bethe ansatz. This is reflected by an enhanced discrete symmetry in the asymptotic limit, whereby extra energy degeneracy enters the spectrum. We discuss how finite size corrections should lift this degeneracy, through both perturbative (Lüscher) and non-perturbative approaches (the Mirror TBA), and illustrate this explicitly on two such asymptotically degenerate states.
Original languageEnglish
Pages (from-to)1-20
Number of pages20
JournalJournal of High Energy Physics
Volume9
Issue number50
DOIs
Publication statusPublished - 2011

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