Visco-elastic Cosmology for a Sparkling Universe?

Germain Rousseaux (1) , S. C. Mancas (2)

1 HydEE - Hydrodynamique et écoulements environnementaux [Institut Pprime]
2 Embry-Riddle Aeronautical University

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.

Domaines: Cosmologie et astrophysique extra-galactique [astro-ph.CO]; Milieux fluides et réactifs

Germain Rousseaux, S. C. Mancas. Visco-elastic Cosmology for a Sparkling Universe?. General Relativity and Gravitation, 2020, 52 (6), pp.55. ⟨10.1007/s10714-020-02705-y⟩. ⟨hal-02467421v2⟩