Dissipative dynamics of entangled finite-spin systems with non-competitive external fields
Abstract
We apply a new method based upon thermofield dynamics (TFD) to study entanglement of finite-spin systems with non-competitive external fields for both equilibrium and non-equilibrium cases. For the equilibrium finite-spin systems, the temperature dependence of the extended density matrices is derived using this method, and the effect of non-competitive external field is demonstrated. For the non-equilibrium finite-spin systems, the time dependence of the extended density matrices and the extended entanglement entropies is derived in accordance with von Noumann equation, and the dissipative dynamics of the finite-spin systems is argued. Consequently, the applicability of the TFD-based method to describe entanglement is confirmed in both equilibrium and non-equilibrium cases with the external fieds.
Keywords
Cite
@article{arxiv.1503.00052,
title = {Dissipative dynamics of entangled finite-spin systems with non-competitive external fields},
author = {Koichi Nakagawa},
journal= {arXiv preprint arXiv:1503.00052},
year = {2016}
}
Comments
LaTeX, 10 pages, 12 figures, Eqs. (19) and (20) have been modified