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Collisional decoherence reexamined

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arxiv quant-ph/0303094 v2 pith:BYUUFTSR submitted 2003-03-14 quant-ph

Collisional decoherence reexamined

classification quant-ph
keywords decoherenceagreementanalysisavoidsbrowniancalculationcarefulcollisional
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We re-derive the quantum master equation for the decoherence of a massive Brownian particle due to collisions with the lighter particles from a thermal environment. Our careful treatment avoids the occurrence of squares of Dirac delta functions. It leads to a decoherence rate which is smaller by a factor of 2 pi compared to previous findings. This result, which is in agreement with recent experiments, is confirmed by both a physical analysis of the problem and by a perturbative calculation in the weak coupling limit.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Gravitationally Induced Quantum Decoherence of Macroscopic Objects

    gr-qc 2026-06 unverdicted novelty 5.0

    Gravitational decoherence of macroscopic objects in Newtonian gravity accumulates logarithmically over distances but remains subdominant to collisional decoherence.

  2. Matter-Wave Interferometers as Open-System Dark Matter Detectors

    hep-ph 2026-05 unverdicted novelty 5.0

    The paper formulates dark matter detection in matter-wave interferometers as an open-system problem using Schwinger-Keldysh effective field theory, revealing channel asymmetries and Bose/Pauli factors for elastic scattering.