Order-Parameter Correlation Functions in Quantum Critical Phenomena
Statistical Mechanics
2007-07-05 v1 Strongly Correlated Electrons
Abstract
We investigate the functional form of the order-parameter (two-point) correlation function in quantum critical phenomena. Contrary to the common lore, when there is no particle-hole symmetry we find that the equal-time correlation function at criticality does not display a diverging correlation length. We illustrate our conclusions by Monte Carlo calculations of the quantum rotor model in space dimensions
Cite
@article{arxiv.0707.0509,
title = {Order-Parameter Correlation Functions in Quantum Critical Phenomena},
author = {Min-Chul Cha and Gerardo Ortiz},
journal= {arXiv preprint arXiv:0707.0509},
year = {2007}
}
Comments
4 pages, 4 figures