Suppression of Meszaros' Effect in coupled DE
Silvio Bonometto, Roberto Mainini
TL;DR
This paper discusses how a phenomenological dark matter-dark energy coupling can suppress Meszaros' effect, affecting the transfered spectra and posing challenges for reconciling models with observational data.
Contribution
It demonstrates that DM-DE coupling can suppress Meszaros' effect, influencing the shape of the transfered spectra and complicating model-data consistency.
Findings
Coupling can suppress Meszaros' effect
Transfered spectra exhibit softer bending
Challenges in fitting CMB and deep sample data
Abstract
A phaenomenological DM-DE coupling could indicate their common origin. Various constraint however exist to such coupling; here we outline that it can suppress Meszaros' effect, yielding transfered spectra with a softer bending above k_{hor,eq}. It could be therefore hard to reconcile these models with both CMB and deep sample data, using a constant spectral index.
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