Classical and quantum Big Brake cosmology for scalar field and tachyonic models

Journal Article · Thu Feb 21 00:00:00 EST 2013 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4791751· OSTI ID:22113530

Kamenshchik, A. Yu. ^[1]; Manti, S. ^[2]

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1. Dipartimento di Fisica e Astronomia and INFN, Via Irnerio 46, 40126 Bologna (Italy) and L.D. Landau Institute for Theoretical Physics of the Russian Academy of Sciences, Kosygin str. 2, 119334 Moscow (Russian Federation)
2. Scuola Normale Superiore, Piazza dei Cavalieri 7, 56126 Pisa (Italy)

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.

• OSTI ID: 22113530
• Journal Information: AIP Conference Proceedings, Vol. 1514, Issue 1; Conference: Multicosmofun '12: Multiverse and fundamental cosmology conference, Szczecin (Poland), 10-14 Sep 2012; Other Information: (c) 2013 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
COSMOLOGICAL MODELS
COSMOLOGY
QUANTUM FIELD THEORY
SCALAR FIELDS
SINGULARITY
TACHYONS