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Updated: Jul 19, 2026

Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
Model for gravitational interaction between dark matter and baryons
Federico Piazza1, Christian Marinoni
1Dipartimento di Fisica, Università di Milano Bicocca, Piazza delle Scienze 3, I-20126 Milan, Italy.
Abstract:
We propose a phenomenological model where the gravitational interaction between dark matter and baryons is suppressed on small, subgalactic scales. We describe the gravitational force by adding a Yukawa contribution to the standard Newtonian potential and show that this interaction scheme is effectively suggested by the available observations of the inner rotation curves of small mass galaxies. Besides helping in interpreting the cuspy profile of dark matter halos observed in N-body simulations, this potential regulates the quantity of baryons within halos of different masses.
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