Skewness of matter distribution in clustering dark energy cosmologies. (arXiv:1912.00094v1 [astro-ph.CO])

<a href="http://arxiv.org/find/astro-ph/1/au:+Velten_H/0/1/0/all/0/1">Hermano Velten</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Fazolo_R/0/1/0/all/0/1">Raquel Emy Fazolo</a>

We calculate the skewness (the third moment $S_3$) of matter distribution in

dynamical dark energy cosmologies. We pay particular attention to the impact of

dark energy perturbations on this quantity. There is indeed a clear signature

of dark energy perturbations on this quantity. By properly allowing dark energy

perturbations we show that their impact on $S_3$ is strong enough (a factor

$sim 3$ greater) to easily discriminate between clustering and non-clustering

dark energy cosmologies. This indicates that high order statistics of the

cosmic density field are useful to the study of dark energy models and are

potentially able to rule out clustering dark energy cosmologies.

We calculate the skewness (the third moment $S_3$) of matter distribution in

dynamical dark energy cosmologies. We pay particular attention to the impact of

dark energy perturbations on this quantity. There is indeed a clear signature

of dark energy perturbations on this quantity. By properly allowing dark energy

perturbations we show that their impact on $S_3$ is strong enough (a factor

$sim 3$ greater) to easily discriminate between clustering and non-clustering

dark energy cosmologies. This indicates that high order statistics of the

cosmic density field are useful to the study of dark energy models and are

potentially able to rule out clustering dark energy cosmologies.

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