Visco-elastic Cosmology for a Sparkling Universe?

Understand

We show the analogy between a generalization of the Rayleigh-Plesset equation of bubble dynamics including surface tension, elasticity and viscosity effects with a reformulation of the Friedmann-Lema\^itre set of equations describing the expansion of space in cosmology assuming a homogeneous and isotropic universe.

• By comparing both fluid and cosmic equations, we propose a bold generalization of the newly-derived cosmic equation mapping three continuum mechanics contributions.
• Conversely, the addition of a cosmological constant-like term in the fluid equation would lead also to a new phenomenology.