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A recently proposed experiment considers the possibility of reaching regimeswhere quantum behavior might be observed in nanomechanical systems. Thisproposed experiment is examined here for feasibility on the basis of results ofearlier studies identifying a boundary separating obligatory classical behaviorfrom quantum behavior based on effects dependent on large scale properties ofthe universe. Calculations indicate that cosmologically induced effects leadingto a quantum to classical transition will not interfere with the proposedexperiment at the level at which it is described. Thus, this experiment may beexpected to be able to succeed for the case of nanomechanical systems such asthe 50 nanometer radius spheres under consideration; however, the success ofsimilar experiments for larger micro scale systems may be ruled out.

Is a recently proposed experiment to demonstrate quantum behavior for optically levitated nanospheres feasible?