Can the expansion of the universe localize quantum wave functions? How classical behavior may result from Hubble expansion

Details Can the expansion of the universe localize quantum wave functions? How classical behavior may result from Hubble expansion Can the expansion of the universe localize quantum wave functions? How classical behavior may result from Hubble expansion

2009-12-07

arxiv.org/abs/0912.1158v1

Physics

General Physics

20 pages, 0 figures

Scientific paper

We consider an object at rest in space with a universal Hubble expansion taking place away from it. We find that a governing differential equation developed from the Schroedinger equation leads to wave functions which turn out to exhibit pronounced central localization. The extent of concentration of probability depends on the mass; objects with small masses tend to behave in a delocalized manner as ordinary quantum objects do in a static space, while quantum objects with large masses have wave functions that are largely concentrated into much smaller regions. This in turn suggests the possibility that classical behavior is being induced in quantum objects by the presence of the Hubble expansion. If the size of the localized region of concentrated probability density is larger than the size of the corresponding extended object, quantum behavior might be expected; whereas classical behavior might be expected for cases in which the region of high probability density is smaller than the size of the object. The resulting quantum-classical boundary due to Hubble expansion may be expressed in terms of a relationship between the size and mass of an object, or may be expressed in terms of a threshold moment of inertia.

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