A 2D integrable axion model and Target space duality

Details A 2D integrable axion model and Target space duality A 2D integrable axion model and Target space duality

2001-11-14

arxiv.org/abs/hep-th/0111124v1

Physics

High Energy Physics

High Energy Physics - Theory

LateX, 21 pages, 1 figure. Improved version of a talk delivered at the Johns Hopkins workshop `Non-perturbative QFT Methods an

Scientific paper

A review is given on the recently proposed two dimensional axion model (O(3) sigma-model with a dynamical Hopf-term) and the T-duality relating it to the SU(2)xU(1) symmetric anisotropic sigma-model. Strong evidence is presented for the correctness of the proposed S-matrix for both models comparing perturbative and Thermodynamical Bethe Ansatz calculations for different types of free energies. This also provides a very stringent test of the validity of T-duality transformation at the quantum level. The quantum non-integrability of the O(3) sigma-model with a non-dynamical Hopf-term, in contradistinction to the axion model, is illustrated by calculating the 2-->3 particle production amplitude to lowest order.

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