Partial entropy in finite-temperature phase transitions
Strongly Correlated Electrons
2009-11-11 v2
Abstract
It is shown that the von Neumann entropy, a measure of quantum entanglement, does have its classical counterpart in thermodynamic systems, which we call partial entropy. Close to the critical temperature the partial entropy shows perfect finite-size scaling behavior even for quite small system sizes. This provides a powerful tool to quantify finite-temperature phase transitions as demonstrated on the classical Ising model on a square lattice and the ferromagnetic Heisenberg model on a cubic lattice.
Cite
@article{arxiv.cond-mat/0605460,
title = {Partial entropy in finite-temperature phase transitions},
author = {Junpeng Cao and Xiaoling Cui and Zhang Qi and Wengang Lu and Qian Niu and Yupeng Wang},
journal= {arXiv preprint arXiv:cond-mat/0605460},
year = {2009}
}
Comments
4 pages, 6 figures, Revised version