Instability of the big bang coordinate singularity in a Milne-like universe

Abstract

We present a simplified dynamic-vacuum-energy model for a time-symmetric Milne-like universe. The big bang singularity in this simplified model, like the one in a previous model, is just a coordinate singularity with finite curvature and energy density. We then calculate the dynamic behavior of scalar metric perturbations and find that these perturbations destabilize the big bang singularity.

20 pages, 4 figures, v2: minor changes

References in corpus (3)

• Self-tuning vacuum variable and cosmological constant
• Dynamic vacuum variable and equilibrium approach in cosmology
• Model for a time-symmetric Milne-like universe without big bang curvature singularity

Cited by in corpus (1)

• Tadpole Cosmology: Milne Solution as a Cosmological Constant Hideout