2004/12/20 by Philipp Werner, Matthias Troyer, Subir Sachdev · 1 citation
Physics and Astronomy · #cond-mat.stat-mech
paper · pdf · doi:10.1143/jpsjs.74s.67
published as J. Phys. Soc. Jpn. Suppl. 74, 67 (2005)
arxiv created 2004/12/20 · arxiv updated 2015/06/24
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 ϕ4 field theory.