Spike oscillations

Author(s)
Johannes Markus Heinzle, Claes Uggla, Woei Chet Lim
Abstract

According to Belinskii., Khalatnikov and Lifshitz (BKL), a generic spacelike singularity is characterized by asymptotic locality: Asymptotically, toward the singularity, each spatial point evolves independently from its neighbors, in an oscillatory manner that is represented by a sequence of Bianchi type I and II vacuum models. Recent investigations support this conjecture but with a modification: Apart from local BKL behavior there also exists formation of spatial structures ("spikes") at, and in the neighborhood of, certain spatial surfaces that break asymptotic locality; the complete description of a generic spacelike singularity involves spike oscillations, which are described by sequences of Bianchi type I and certain inhomogeneous vacuum models. In this paper we describe how BKL and spike oscillations arise from concatenations of exact solutions in a Hubble-normalized state space setting, suggesting the existence of hidden symmetries and showing that the results of BKL are part of a greater picture.

Organisation(s)
Gravitational Physics
External organisation(s)
Karlstad University, University of Waikato
Journal
Physical Review D
Volume
86
No. of pages
26
ISSN
1550-7998
DOI
https://doi.org/10.1103/PhysRevD.86.104049
Publication date
2012
Peer reviewed
Yes
Austrian Fields of Science 2012
103036 Theoretical physics, 103028 Theory of relativity, 103019 Mathematical physics
Portal url
https://ucrisportal.univie.ac.at/en/publications/spike-oscillations(8d2df660-2850-4d1d-8190-adc03a7f04dc).html