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The No-boundary Wave Function for Loop Quantum Cosmology by Brahma, Suddhasattwa; Yeom, Dong-han is a scholarly article available to read on EtoBox.

What is The No-boundary Wave Function for Loop Quantum Cosmology about?

Proposing smooth initial conditions is one of the most important tasks in quantum cosmology. On the other hand, the low-energy effective action, appearing in the semiclassical path integral, can get nontrivial quantum corrections near classical singularities due to specific quantum gravity proposals. In this article, we combine the well-known no-boundary proposal for the wavefunction of the universe with quantum modifications coming from loop quantum cosmology (LQC). Remarkably, we find that the restriction of a `slow-roll' type potential in the original Hartle-Hawking proposal is considerably relaxed due to quantum geometry regularizations. Interestingly, the same effects responsible for singularity-resolution in LQC also end up expanding the allowed space of smooth initial conditions leading to an inflationary universe.

Author

Brahma, Suddhasattwa; Yeom, Dong-han

Published

2018

Language

EN