Tunnelling-induced cosmic bounce in the presence of anisotropies
arXiv:2308.00765 · doi:10.1103/PhysRevD.108.103515
Abstract
If we imagine rewinding the universe to early times, the scale factor shrinks and the existence of a finite spatial volume may play a role in quantum tunnelling effects in a closed universe. It has recently been shown that such finite volume effects dynamically generate an effective equation of state that could support a cosmological bounce. In this work we extend the analysis to the case in which a (homogeneous) anisotropy is present, and identify a criteria for a successful bounce in terms of the size of the closed universe and the properties of the quantum field.
arXiv comment9 pages, 5 figures, minor changes, version accepted for publication in Physical Review D
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