7-11 October 2019
Facultad de Ciencias Físicas, Universidad Complutense de Madrid
Europe/Madrid timezone

Non-perturbative quantization of effective string

10 Oct 2019, 16:50
35m
Aula M2 (Facultad de Ciencias Físicas, Universidad Complutense de Madrid)

Aula M2

Facultad de Ciencias Físicas, Universidad Complutense de Madrid

Plaza de Ciencias, 1 Ciudad Universitaria 28040 Madrid, Spain

Speaker

Prof. Yuri Makeenko (ITEP, Moscow)

Description

I describe quantization of bosonic string about the mean-field ground state, which turns out to be stable in the target-space dimension 2 < d < 26 contrary to the usual classical ground state which is stable only for d<2, and discuss how this resolves some old problems with strings. I compute the string susceptibility index gamma_{str} in the mean-field approximation and demonstrate that it differs from the standard results by KPZ-DDK. Using Pauli-Villars regularization, I compute a correction to the Liouville action by going beyond the conformal anomaly and accounting for quadratic divergences and speculate on how the associated conformal field theory may look like.

Primary author

Prof. Yuri Makeenko (ITEP, Moscow)

Presentation Materials

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