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M. Bolaños, B. A. Stickler, and K. Hornberger
Decoherence of non-relativistic bosonic quantum fields
Phys. Rev. A 99, 060103(R)


We present a generic Markovian master equation inducing the gradual decoherence of a bosonic quantum field. It leads to the decay of quantum superpositions of field configurations, while leaving the Ehrenfest equations for both the field and the mode-variables invariant. We characterize the decoherence dynamics analytically and numerically, and show that the semiclassical field dynamics is described by a linear Boltzmann equation in the functional phase space of field configurations.

(6 pages, 3 figures)   [pdf, journal, arXiv:1904.11811]

doi:10.1103/PhysRevA.99.060103            (c) The American Physical Society