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Title: Tunneling dynamics in cosmological bounce models
Abstract Quasiclassical methods are used to define dynamical tunneling times in models of quantum cosmological bounces. These methods provide relevant new information compared with the traditional treatment of quantum tunneling by means of tunneling probabilities. As shown here, the quantum dynamics in bounce models is not secure from reaching zero scale factor, re-opening the question of how the classical singularity may be avoided. Moreover, in the examples studied here, tunneling times remain small even for large barriers, highlighting the quantum instability of underlying bounce models.  more » « less
Award ID(s):
1912168
PAR ID:
10323852
Author(s) / Creator(s):
;
Date Published:
Journal Name:
Journal of Cosmology and Astroparticle Physics
Volume:
2021
Issue:
11
ISSN:
1475-7516
Page Range / eLocation ID:
037
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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