Temperature Correlation of Quantum Spins

Details Temperature Correlation of Quantum Spins Temperature Correlation of Quantum Spins

2009-09-25

arxiv.org/abs/0909.4751v1

Phys. Rev. Lett. 70 (1993) 1704-1708; Erratum Phys.Rev.Let. 70 (1993) 2357

Physics

Quantum Physics

8 pages

Scientific paper

This is a historical note. In 1993 we calculated space, time and temperature dependent correlation function in isotropic version of one dimensional XY spin chain. The correlation function decays exponentially with time and space separation. The rate of exponential decay was evaluated explicitly. Since that time similar results were obtained in other models: Bose gas with delta interaction, Ising model and strongly correlated electrons.

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