Open AccessHow accurate is the quantum string Bethe ansatz?
Author(s) -
Sakura SchäferNameki,
Marija Zamaklar,
Konstantin Zarembo
Publication year - 2006
Publication title -
journal of high energy physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.998
H-Index - 261
eISSN - 1126-6708
pISSN - 1029-8479
DOI - 10.1088/1126-6708/2006/12/020
Subject(s) - bethe ansatz , string (physics) , physics , mathematical physics , string theory , quantum mechanics , quantum , sigma , theoretical physics
We compare solutions of the quantum string Bethe equations with explicitone-loop calculations in the sigma-model on AdS(5)xS(5). The Bethe ansatzexactly reproduces the spectrum of infinitely long strings. When the length isfinite, we find that deviations from the exact answer arise which areexponentially small in the string length.Comment: 13 pages, 1 figure; v4: typo in A.2 correcte
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