Tunneling dynamics in cosmological bounce models

Martin Bojowald, Brenda Jones

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish (US)
Article number037
JournalJournal of Cosmology and Astroparticle Physics
Issue number11
StatePublished - Nov 2021

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics

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