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.
Tunneling decay rate in quantum cosmology
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abstract
In canonical quantum cosmology, the wave function of the universe lacks explicit time dependence. However, time evolution may be present implicitly through the semiclassical superspace variables, which themselves depend on time in classical dynamics. In this paper, we apply this approach to an oscillating universe model recently introduced by Graham et al. By extending the model to include a massless, minimally coupled scalar field $\phi$ which has little effect on the dynamics but can play the role of a "clock", we determine the decay rate of the oscillating universe.
fields
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.