Quantum master equation for collisional dynamics of massive particles with internal degrees of freedom

Details Quantum master equation for collisional dynamics of massive particles with internal degrees of freedom Quantum master equation for collisional dynamics of massive particles with internal degrees of freedom

2010-03-04

arxiv.org/abs/1003.0998v2

Phys. Rev. A 82, 042111 (2010)

Physics

Quantum Physics

18 pages, 2 figures; v2: corresponds to published version

Scientific paper

10.1103/PhysRevA.82.042111

We address the microscopic derivation of a quantum master equation in Lindblad form for the dynamics of a massive test particle with internal degrees of freedom interacting through collisions with a background ideal gas. When either internal or centre of mass degrees of freedom can be treated classically, previously established equations are obtained as special cases. If in an interferometric setup the internal degrees of freedom are not detected at the output, the equation can be recast in the form of a generalized Lindblad structure, which describes non-Markovian effects. The effect of internal degrees of freedom on centre of mass decoherence is considered in this framework.

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