Lower and upper bounds on CSL parameters from latent image formation and IGM heating

By Stephen L. Adler. 2006

175 citations recorded by the source corpus.

We study lower and upper bounds on the parameters for stochastic state vector reduction, focusing on the mass-proportional continuous spontaneous localization (CSL) model. We show that the assumption that the state vector is reduced when a latent image is formed, in photography or etched track detection, requires a CSL reduction rate parameter λ that is larger than conventionally assumed by a factor of roughly 2 × 109±2, for a correlation length rC of 10−5cm. We reanalyse existing upper bounds on the reduction rate and conclude that all are compatible with such an increase in λ. The best bounds that we have obtained come from a consideration of heating of the intergalactic medium (IGM), which shows that λ can be at most ∼108±1 times as large as the standard CSL value, again for rC = 10−5cm. (For both the lower and upper bounds, quoted errors are not purely statistical errors, but rather are estimates reflecting modelling uncertainties.) We discuss modifications in our analysis corresponding to a larger value of rC. With a substantially enlarged rate parameter, CSL effects may be within range of experimental detection (or refutation) with current technologies.

View Paper: https://www.semanticscholar.org/paper/b989b3d514920d53395aec0605fd2a2f8f81073e

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Citations in the corpus

Models of Wave-function Collapse, Underlying Theories, and Experimental Tests (2012, methodology): “Thus we have the following simplified formula for the collapse rate (Adler, 2007): Γ = λCSLn 2N, (80) where n is the number of particles within a distance rC , and N is the number of such clusters.”
Colloquium: Quantum interference of clusters and molecules (2011, background): “Current estimates of the strength of the CSL effect by Adler (2007) and Bassi et al. (2010) locate its value between 10−12Hz and 10−8Hz, which also ensures that the CSL predictions are consistent with all currently known micro- and mesoscopic quantum phenomena.”