Superpositions of the cosmological constant allow for singularity resolution and unitary evolution in quantum cosmology
arXiv:1801.05782 · doi:10.1016/j.physletb.2018.08.013
Abstract
A novel approach to quantization is shown to allow for superpositions of the cosmological constant in isotropic and homogeneous mini-superspace models. Generic solutions featuring such superpositions display unitary evolution and resolution of the classical singularity. Physically well-motivated cosmological solutions are constructed. These particular solutions exhibit characteristic features of a cosmic bounce including universal phenomenology that can be rendered insensitive to Planck-scale physics in a natural manner.
Version accepted to Physics Letters B. Minor revisions, clarifications added. 7 pages, 3 figures
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