Quantum KZ equation with |q| = 1 and correlation functions of theXXZmodel in the gapless regime
- 21 June 1996
- journal article
- Published by IOP Publishing in Journal of Physics A: General Physics
- Vol. 29 (12) , 2923-2958
- https://doi.org/10.1088/0305-4470/29/12/005
Abstract
An integral solution to the quantum Knizhnik - Zamolodchikov (qKZ) equation with |q|=1 is presented. Upon specialization, it leads to a conjectural formula for correlation functions of the XXZ model in the gapless regime. The validity of this conjecture is verified in special cases, including the nearest-neighbour correlator with an arbitrary coupling constant and general correlators in the XXX and XY limits.Keywords
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