4 citations
4 papers
Zeeman effects on the entanglement of non-equilibrium finite-spin systems
Koichi Nakagawa
We study the Zeeman effect on entanglement of non-equilibrium finite-spin systems with external fields using a method based on thermofield dynamics (TFD). For this purpose, the ext…
Dissipative dynamics of entangled finite-spin systems with non-competitive external fields
Koichi Nakagawa
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-equilibri…
Entanglement Entropies of Non-Equilibrium Finite-Spin Systems
Koichi Nakagawa
For the purpose of clarifying a new approach to understanding quantum entanglement using thermofield dynamics (TFD), entanglement entropies of non-equilibrium finite-spin systems a…
Heterotic String Thermofield Dynamics
H. Fujisaki, K. Nakagawa, S. Sano
Physical aspects of the thermofield dynamics of the D=10 heterotic thermal string theory are exemplified through the infrared behaviour of the one-loop dual symmetric cosmological…