Interacting dark energy collapse with matter components separation

2012/08/31 by M. Le Delliou, Morgan Le Delliou, Tiago Barreiro +1
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark energy #Dark fluid #Dark matter #Gravitational collapse #Particle physics theoretical and experimental studies #Quintessence #RADIUS #Scalar field dark matter #astro-ph.CO #gr-qc #hep-th

paper · pdf · doi:10.1088/1475-7516/2013/02/037

23pp 4 figs, accepted in JCAP

arxiv created 2013/02/01 · openalex publication_date 2013/02/21 · arxiv updated 2015/06/11 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

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.

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