In Jordan-Brans-Dicke theory, the Einstein static universe can be made robust against classical perturbations and representative semiclassical tunneling channels by appropriate choices of the JBD potential and model parameters.
Stablizing oscillating universes against quantum decay
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abstract
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 singularity. We find that these corrections do not generally stabilize an oscillating universe. However, stability may be achieved for some specially fine-tuned non-vacuum states.
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gr-qc 1years
2021 1verdicts
UNVERDICTED 1representative citing papers
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Classical and Semiclassical Stability of Emergent Universes in Jordan-Brans-Dicke Theory
In Jordan-Brans-Dicke theory, the Einstein static universe can be made robust against classical perturbations and representative semiclassical tunneling channels by appropriate choices of the JBD potential and model parameters.