Classical and quantum Big Brake cosmology for scalar field and tachyonic models
General Relativity and Quantum Cosmology
2015-06-04 v2 Cosmology and Nongalactic Astrophysics
High Energy Physics - Theory
Quantum Physics
Abstract
We study a relation between the cosmological singularities in classical and quantum theory, comparing the classical and quantum dynamics in some models possessing the Big Brake singularity - the model based on a scalar field and two models based on a tachyon-pseudo-tachyon field . It is shown that the effect of quantum avoidance is absent for the soft singularities of the Big Brake type while it is present for the Big Bang and Big Crunch singularities. Thus, there is some kind of a classical - quantum correspondence, because soft singularities are traversable in classical cosmology, while the strong Big Bang and Big Crunch singularities are not traversable.
Keywords
Cite
@article{arxiv.1202.0174,
title = {Classical and quantum Big Brake cosmology for scalar field and tachyonic models},
author = {Alexander Y. Kamenshchik and Serena Manti},
journal= {arXiv preprint arXiv:1202.0174},
year = {2015}
}
Comments
final version, to appear in Phys. Rev. D