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

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.

8 pages, published in the Proceedings of the International conference "Multiverse and Fundamental Cosmology: Multicosmofun '12", September 10-14, Szczein, Poland edited by Mariusz P. Dabrowski, Adam Balcerzak, Tomasz Denkiewicz

References in corpus (10)

• Dynamics of dark energy
• Quantum phantom cosmology
• Quantum cosmology with big-brake singularity
• On the quantum fate of singularities in a dark-energy dominated universe
• Strings at future singularities
• How far is it to a sudden future singularity of pressure?
• Geodesically Complete Analytic Solutions for a Cyclic Universe
• Tachyon cosmology, supernovae data and the Big Brake singularity
• Reconstruction of Scalar Potentials in Induced Gravity and Cosmology
• Will the tachyonic Universe survive the Big Brake?

Cited by in corpus (7)

• Conceptual Problems in Quantum Gravity and Quantum Cosmology
• Quantum cosmology and late-time singularities
• The quantum realm of the "Little Sibling" of the Big Rip singularity
• Towards the Quantization of Eddington-inspired-Born-Infeld Theory
• $f(R)$ quantum cosmology: avoiding the Big Rip
• Combined cosmological tests of a bivalent tachyonic dark energy scalar field model
• Sudden Future Singularities in Quintessence and Scalar-Tensor Quintessence Models