Interacting dark energy collapse with matter components separation

Abstract

We use the spherical collapse model of structure formation to investigate the separation in the collapse of uncoupled matter (essentially baryons) and coupled dark matter in an interacting dark energy scenario. Following the usual assumption of a single radius of collapse for all species, we show that we only need to evolve the uncoupled matter sector to obtain the evolution for all matter components. This gives us more information on the collapse with a simplified set of evolution equations compared with the usual approaches. We then apply these results to four quintessence potentials and show how we can discriminate between different quintessence models.

23pp 4 figs, accepted in JCAP

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Cited by in corpus (6)

• Dark sector impact on gravitational collapse of an electrically charged scalar field
• New observational constraints on interacting dark energy using galaxy clusters virial equilibrium states
• Classification of static black holes in Einstein phantom/dilaton Maxwell/anti-Maxwell gravity systems
• Spherical collapse in coupled quintessence with a $\Lambda$CDM background
• Spherical collapse and cluster number counts in dark energy models disformally coupled to dark matter
• Constraining Violations of the Weak Equivalence Principle in the Dark Sector