Decoherent Histories and Quantum State Diffusion

Details Decoherent Histories and Quantum State Diffusion Decoherent Histories and Quantum State Diffusion

1994-03-26

arxiv.org/abs/gr-qc/9403047v1

Phys.Rev.Lett. 74 (1995) 203-207

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

11 pages (plain Tex), Imperial College preprint 93-94/25

Scientific paper

10.1103/PhysRevLett.74.203

We demonstrate a close connection between the decoherent histories (DH) approach to quantum mechanics and the quantum state diffusion (QSD) picture, for open quantum systems described by a master equation of Lindblad form. The (physically unique) set of variables that localize in the QSD picture also define an approximately decoherent set of histories in the DH approach. The degree of localization is related to the degree of decoherence, and the probabilities for histories prescribed by each approach are essentially the same.

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