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TBA, NLO Lüscher correction, and double wrapping in twisted AdS/CFT

Title
TBA, NLO Lüscher correction, and double wrapping in twisted AdS/CFT
Authors
Ahn C.Bajnok Z.Bombardelli D.Nepomechie R.I.
Ewha Authors
안창림
SCOPUS Author ID
안창림scopus
Issue Date
2011
Journal Title
Journal of High Energy Physics
ISSN
1126-6708JCR Link
Citation
vol. 2011, no. 12
Indexed
SCOPUS WOS scopus
Abstract
The ground-state energy of integrably-twisted theories is analyzed in finite volume. We derive the leading and next-to-leading order (NLO) Lüscher-type corrections for large volumes of the vacuum energy for integrable theories with twisted boundary conditions and twisted S-matrix. We then derive the twisted thermodynamic Bethe ansatz (TBA) equations to describe exactly the ground state, from which we obtain an untwisted Y-system. The two approaches are compared by expanding the TBA equations to NLO, and exact agreement is found. We give explicit results for the O(4) model and for the γ-deformed (non-supersymmetric) planar AdS/CFT model, where the groundstate energy can be nontrivial and can acquire finite-size corrections. The NLO corrections, which correspond to double-wrapping diagrams, are explicitly evaluated for the latter model at six loops. © SISSA 2011.
DOI
10.1007/JHEP12(2011)059
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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