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astro-ph.CO2026
Dark matter-baryons elastic coupling
David Figueruelo, Florencia Anabella Teppa Pannia
We consider a cosmological model where dark matter and baryons interact via a pure momentum transfer. We present the foundations of the interaction and derive its main equations. I…
astro-ph.CO2026★ 8 cited
Late-time Background Constraints on Linear and Non-linear Interacting Dark Energy after DESI DR2
David Figueruelo, Marcel van der Westhuizen, Amare Abebe +1
In this study, we present observational constraints on a class of phenomenological interacting dark energy (IDE) models that admit analytical solutions for the Hubble parameter $H(…