15 citations · 36 across the 10 of their papers we have counts for
10 papers
CP-violating supersymmetry anomaly
Koichiro Nakagawa, Yu Nakayama
We show that CP-violating Weyl anomaly induces a supersymmetry anomaly in the formulation of superconformal supergravity as is observed in CP-preserving cases. This supersymmetry a…
CP-violating super Weyl anomaly
Koichiro Nakagawa, Yu Nakayama
In CP-violating conformal field theories in four dimensions, the Pontryagin density can appear in the Weyl anomaly. The Pontryagin density in the Weyl anomaly is consistent, but it…
Entanglement entropies of coupled harmonic oscillators
Koichi Nakagawa
We investigate the quantum entanglement of systems of coupled harmonic oscillators on the basis of thermo-field dynamics (TFD). For coupled harmonic oscillators at equilibrium, the…
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…