Quantum KZ equation with ? and correlation functions of the XXZ model in the gapless regime
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.
- Publication:
-
Journal of Physics A Mathematical General
- Pub Date:
- June 1996
- DOI:
- 10.1088/0305-4470/29/12/005
- arXiv:
- arXiv:hep-th/9601135
- Bibcode:
- 1996JPhA...29.2923J
- Keywords:
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- High Energy Physics - Theory
- E-Print:
- J.Phys. A29 (1996) 2923-2958