Hashizume, Yoichiro; Suzuki, Masuo - In: Physica A: Statistical Mechanics and its Applications 392 (2013) 17, pp. 3518-3530
We propose a new method to understand quantum entanglement using the thermo field dynamics (TFD) described by a double Hilbert space. The entanglement states show a quantum-mechanically complicated behavior. Our new method using TFD makes it easy to understand the entanglement states, because...