2007•Modern Physics Letters BRequires access

THE MIXED COHERENT STATE REPRESENTATION OF THE DENSITY OPERATOR IN THERMO-FIELD DYNAMICS

Heng Fan, Hai-liang Lu

Abstract

In the framework of thermo-field dynamics, invented by Umezawa et al., we construct a mixed coherent state representation of density operator ρ. This new representation is useful because it provides an approach to retrieve ρ from its c-number solution of master equations in the entangled state representation.

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Key concepts: Representation (politics), Coherent states, Operator (biology), Field (mathematics), State (computer science), Master equation, Statistical physics, Construct (python library)