Determinant Representations for Correlation Functions of Spin-1/2 XXX and XXZ Heisenberg Magnets
F. H. L. Essler, H. Frahm, A. G. Izergin, V. E. Korepin
Abstract
We consider correlation functions of the spin- XXX and XXZ Heisenberg chains in a magnetic field. Starting from the algebraic Bethe Ansatz we derive representations for various correlation functions in terms of determinants of Fredholm integral operators.
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