Today, collapse theories, together with Bohm’s theory and Everett’s theory, are widely regarded as three main realistic alternatives to standard quantum mechanics. However, there have been controversies on the origin, ontology and models of wave-function collapse. The main purpose of this online workshop is to highlight the existing debates and address the controversies. Another purpose of this workshop is to get some constructive inputs to the forthcoming volume Collapse of the Wave Function: Models, Origin and Ontology (CUP, 2018). The list of contributors includes Daniel Bedingham, Dorje C. Brody, Lajos Diosi, Michaël-Andreas Esfeld, Roman Frigg, Ivette Fuentes, Lane Hughston, Shan Gao, GianCarlo Ghirardi, Nicolas Gisin, Adrian Kent, Peter Lewis, Nicholas Maxwell, Wayne Myrvold, Elias Okon, Oreste Nicrosini, Roland Omnès, Philip Pearle, Roger Penrose, Alberto Rimini, Tejinder P. Singh, Lee Smolin, Daniel Sudarsky, and Roderich Tumulka.
Workshop Date: Tuesday, 30 May, 2017 to Friday, June 30, 2017
Group Admins
Dynamical collapse for photons
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I suggest a simple alteration of my CSL (Continuous Spontaneous Localization) theory, replacing the mass density collapse-generating operators by relativistic energy density operators. Some consequences of the density matrix evolution equation are explored. First, the expression for the mean energy increase of free particles is calculated (which, in the non-relativistic limit, agrees with the usual result). Then, the density matrix evolution is applied to photons. The mean rate of loss of photon number from a laser beam pulse, the momentum distribution of the photons “excited” out of the laser beam pulse, and the alteration of the cosmic blackbody spectrum are all treated to first order in the collapse rate parameter λ. Associated possible experimental limits on λ are discussed.
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