Non-standard baryon-dark matter interactions

TL;DR

This paper explores a novel non-standard interaction between baryonic matter and dark matter that aims to combine the strengths of CDM and MOND paradigms across different astrophysical scales.

Contribution

It proposes a new interaction model that reproduces CDM successes at large scales and MOND-like behavior in spiral galaxies.

Findings

Model can replicate galaxy rotation curves without dark matter halos

Aligns large-scale structure formation with observations

Provides a unified framework for dark matter and modified gravity

Abstract

After summarizing the respective merits of the Cold Dark Matter (CDM) and Modified Newtonian Dynamics (MOND) paradigms in various stellar systems, we investigate the possibility that a non-standard interaction between baryonic and dark matter could reproduce the successes of CDM at extragalactic scales while making baryonic matter effectively obey the MOND field equation in spiral galaxies.