Fine Structure of String Spectrum in AdS5× S5
K. Zarembo, S. Zieme
Nordic Institute for Theoretical Physics, SE-106 91 Stockholm, Sweden
The spectrum of an infinite spinning string in AdS5
does not precisely match the spectrum of dual gauge theory operators, interpolated to the
strong coupling regime with the help of Bethe-ansatz equations. We show that the
mismatch is due to interactions in the string σ-model which cannot be neglected
even at asymptotically large 't Hooft coupling.