Low temperature relaxational dynamics of the Ising chain in a transverse field
Condensed Matter
2016-08-31 v2
Abstract
We present asymptotically exact results for the real time order parameter correlations of a class of d=1 Ising models in a transverse field at low temperatures (T) on both sides of the quantum critical point. The correlations are a product of a T-independent factor determined by quantum effects, and a T-dependent relaxation function which comes from a classical theory. We confirm our predictions by a no-free-parameter comparison with numerical studies on the nearest neighbor spin-1/2 model.
Keywords
Cite
@article{arxiv.cond-mat/9609185,
title = {Low temperature relaxational dynamics of the Ising chain in a transverse field},
author = {Subir Sachdev and A. P. Young},
journal= {arXiv preprint arXiv:cond-mat/9609185},
year = {2016}
}
Comments
Final version to be published in Physical Review Letters. The postscript file is also available by anonymous ftp at ftp://chopin.ucsc.edu/pub/dynamics.ps.gz