52 citations · 109 across the 5 of their papers we have counts for
5 papers
Tunneling decay rate in quantum cosmology
Audrey T. Mithani, Alexander Vilenkin
In canonical quantum cosmology, the wave function of the universe lacks explicit time dependence. However, time evolution may be present implicitly through the semiclassical supers…
Stablizing oscillating universes against quantum decay
Audrey T. Mithani, Alexander Vilenkin
We investigate the effect of vacuum corrections, due to the trace anomaly and Casimir effect, on the stability of an oscillating universe with respect to decay by tunneling to the…
Instability of an emergent universe
Audrey T. Mithani, Alexander Vilenkin
Oscillating solutions to the effective equations of Loop Quantum Cosmology have been suggested for the role of an `eternal seed', providing a possible starting point for the emerge…
Did the universe have a beginning?
Audrey Mithani, Alexander Vilenkin
We discuss three candidate scenarios which seem to allow the possibility that the universe could have existed forever with no initial singularity: eternal infation, cyclic evolutio…
Collapse of simple harmonic universe
Audrey T. Mithani, Alexander Vilenkin
In a recent paper Graham et al constructed oscillating and static universe models which are stable with respect to all classical perturbations. Here we show that such universes are…