Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2003-08-28
Physics
Condensed Matter
Statistical Mechanics
12 pages, 1 figure
Scientific paper
10.1143/JPSJ.73.245
The second neighbor correlation functions of the spin-${{1/2}}$ $XXZ$ chain
in the ground state are expressed in the form of three dimensional integrals.
We show that these integrals can be reduced to one-dimensional ones and thereby
evaluate the values of the next nearest-neighbor correlation functions for
${\Delta >1}$.
Kato Go
Shiroishi Masahiro
Takahashi Minoru
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