Quantum spin chains with site dissipation
Statistical Mechanics
2015-06-24 v1
Abstract
We use Monte Carlo simulations to study chains of Ising- and XY-spins with dissipation coupling to the site variables. The phase diagram and critical exponents of the dissipative Ising chain in a transverse magnetic field have been computed previously, and here we consider a universal ratio of susceptibilities. We furthermore present the phase diagram and exponents of the dissipative XY-chain, which exhibits a second order phase transition. All our results compare well with the predictions from a dissipative field theory.
Cite
@article{arxiv.cond-mat/0412529,
title = {Quantum spin chains with site dissipation},
author = {Philipp Werner and Matthias Troyer and Subir Sachdev},
journal= {arXiv preprint arXiv:cond-mat/0412529},
year = {2015}
}