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Dissipative Dynamics of Entangled Finite-spin Systems with Non-competitive External Fields by Nakagawa, Koichi is a scholarly article available to read on EtoBox.

What is Dissipative Dynamics of Entangled Finite-spin Systems with Non-competitive External Fields about?

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.

Author

Nakagawa, Koichi

Published

2015

Language

EN