Spike oscillations

Autor(en)

Johannes Markus Heinzle, Claes Uggla, Woei Chet Lim

Abstrakt

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(en)

Gravitationsphysik

Externe Organisation(en)

Karlstad University, University of Waikato

Journal

Physical Review D

Band

86

Anzahl der Seiten

26

ISSN

1550-7998

DOI

https://doi.org/10.1103/PhysRevD.86.104049

Publikationsdatum

2012

Peer-reviewed

Ja

ÖFOS 2012

103036 Theoretische Physik, 103028 Relativitätstheorie, 103019 Mathematische Physik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/8d2df660-2850-4d1d-8190-adc03a7f04dc