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arXiv · 1503.07995

Backreaction in Growing Neutrino Quintessence

Florian Führer·Christof Wetterich
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Abstract

We investigate the cosmological effects of neutrino lumps in Growing Neutrino Quintessence. The strongly non-linear effects are resolved by means of numerical N-body simulations which include relativistic particles, non-linear scalar field equations and backreaction effects. For the investigated models with a constant coupling between the scalar field and the neutrinos the backreaction effects are so strong that a realistic cosmology is hard to realize. This points towards the necessity of a field dependent coupling in Growing Neutrino Quintessence. In this case realistic models of dynamical Dark Energy exist which are testable by the observation or non-observation of large neutrino lumps.

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Florian Führer, Christof Wetterich. 2015-03-27. Backreaction in Growing Neutrino Quintessence. https://doi.org/10.1103/physrevd.91.123542

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