A numerical simulation of pre-big bang cosmology

Details A numerical simulation of pre-big bang cosmology A numerical simulation of pre-big bang cosmology

1998-01-31

arxiv.org/abs/gr-qc/9802001v2

JHEP 9804:004,1998

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

19 pages, revtex, matlab code available at http://www.fis.unipr.it/~onofri

Scientific paper

10.1088/1126-6708/1998/04/004

We analyse numerically the onset of pre-big bang inflation in an inhomogeneous, spherically symmetric Universe. Adding a small dilatonic perturbation to a trivial (Milne) background, we find that suitable regions of space undergo dilaton-driven inflation and quickly become spatially flat ($\Omega \to 1$). Numerical calculations are pushed close enough to the big bang singularity to allow cross checks against previously proposed analytic asymptotic solutions.

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