University of Connecticut

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Physics Colloquium (Dr. Ali Kaya)

Friday, March 6, 2020
3:30pm – 4:30pm

Storrs Campus

Dr. Ali Kaya, Department of Physics, Harvard University

Challenging the initial condition prescriptions in quantum cosmology

Determining the initial state of the universe is a challenging problem in quantum cosmology and there are popular suggestions like the no boundary (Hawking & Hartle) and the tunneling (Vilenkin) prescriptions.

After briefly reviewing the problem, we argue that the quantum theory of gravity must resolve the big-bang singularity either by yielding a regular past eternal evolution or by a smooth finite beginning; in both cases the initial state can in principle be totally arbitrary that need not to be restricted by any ad-hoc principle. We illustrate this point in a minisuperspace toy model where there is a smooth beginning of the universe provided by the matter Hamiltonian degenerating to the zero operator. This simple model also illustrates how quantum gravity may resolve the big-bang singularity.


Prof. Necmi Biyikli (ECE)

Physics Department (primary), College of Liberal Arts and Sciences, UConn Master Calendar

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