A system of quantum stochastic differential equations in terms of non-equilibrium thermo field dynamics
Takeshi Saito, Toshihico Arimitsu
Within the framework of non-equilibrium thermo field dynamics (NETFD), quantum Wiener processes at finite temperatures are constructed, and its representation space is shown to be the thermal space. After the introduction of the stochastic Shrödinger equation, a unified system of quantum stochastic differential equations, including the quantum stochastic Liouville equation and the quantum Langevin equation, is established within the quantum stochastic calculus.
Journal of Physics A Mathematical and General•Nov 7, 1997•4 citations