Document Type

Article

Date of Original Version

7-18-1983

Abstract

New exact results are presented on the long-time asymptotic expansions of the T=0 autocorrelation functions, and on the leading singularities of their frequency-dependent Fourier transforms, for the one-dimensional S=1/2 isotropic XY model and the S=1/2 transverse Ising model at the critical field. High-precision numerical calculations of the latter functions are also given, and experiments are proposed to observe the functional behaviors that are found.

Publisher Statement

© Copyright 1983 of the American Physical Society

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