English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Extended LCDM: generalized non-minimal coupling for dark matter fluids

MPS-Authors
/persons/resource/persons4297

Sindoni,  Lorenzo
Microscopic Quantum Structure & Dynamics of Spacetime, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

External Resource
No external resources are shared
Fulltext (public)

1108.1728
(Preprint), 211KB

JCAP_2011_11_007.pdf
(Any fulltext), 341KB

Supplementary Material (public)
There is no public supplementary material available
Citation

Bettoni, D., Liberati, S., & Sindoni, L. (2011). Extended LCDM: generalized non-minimal coupling for dark matter fluids. Journal of Cosmology and Astroparticle Physics, 11: 007. doi:10.1088/1475-7516/2011/11/007.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0012-14CC-9
Abstract
In this paper we discuss a class of models that address the issue of explaining the gravitational dynamics at the galactic scale starting from a geometric point of view. Instead of claiming the existence of some hidden coupling between dark matter and baryons, or abandoning the existence of dark matter itself, we consider the possibility that dark matter and gravity have some non trivial interaction able to modify the dynamics at astrophysical scales. This interaction is implemented assuming that dark matter gets non--minimally coupled with gravity at suitably small scales and late times. After showing the predictions of the model in the Newtonian limit we also discuss the possible origin of it non-minimal coupling. This investigation seems to suggest that phenomenological mechanisms envisaged for the dark matter dynamics, such as the Bose--Einstein condensation of dark matter halos, could be connected to this class of models.