Testing spontaneous wave-function collapse models on classical mechanical oscillators

Diósi, Lajos (2015) Testing spontaneous wave-function collapse models on classical mechanical oscillators. PHYSICAL REVIEW LETTERS, 114 (5). ISSN 0031-9007

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Abstract

We show that the heating effect of spontaneous wave-function collapse models implies an exper- imentally significant increment ∆Tsp of equilibrium temperature in a mechanical oscillator. The obtained form ∆Tsp is linear in the oscillator’s relaxation time τ and independent of the mass. The oscillator can be in a classical thermal state, the effect ∆Tsp is classical for a wide range of frequencies and quality factors. We note that the test of ∆Tsp does not necessitate quantum state monitor- ing but tomography. In both gravity-related (DP) and continuous spontaneous localization (CSL) models the strong-effect edge of their parameter range can be challenged in existing experiments on classical oscillators. For the CSL theory, the conjectured highest collapse rate parameter values become immediately constrained by evidences from current experiments on extreme slow-ring-down oscillators.

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