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01.02.2017 (Wednesday)

String Fluctuations in Non-Conformal Holography

Triangular Seminar Kostya Zarembo (NORDITA)

at:
15:00 City U.
room A130
abstract:

Quantum fluctuations of the string worldsheet lead to important effects in gauge-string duality. One example is the L├╝scher term is the QQ-bar potential in QCD, important for matching the lattice data. I will discuss non-conformal holography of the N=2* theory which provides a controllable setup where the effects of string fluctuations are explicitly calculable in field theory, using localization, even though the problem is intrinsically strongly-coupled. The results obtained by direct quantization of the dual string theory perfectly match the field-theory predictions, after subtle effects like dilaton coupling to the string worldsheet are properly taken into account.