Geometry and Integrability in Mathematical Physics GIMP'06
May 15 - 19, 2006, Moscow, Russia
Nikolai Kitanine
Univ. Cergy-Pontoise, France
Correlation functions of the XXZ spin chain.
The correlation functions of the quantum periodic XXZ chain are computed using the Algebraic Bethe Ansatz approach. We show that this method leads to menageable representations for the two-point functions in diffirent cases such as XXZ chain in an external magnetic field or XXZ chain with twisted boundary conditions. We discuss possibilities to apply a similar technique for an open XXZ chain.
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