Dark Matter, Modified Gravity and the Mass of the Neutrino

Abstract

It has been suggested that Einstein's theory of General Relativity can be modified to accomodate mismatches between the gravitational field and luminous matter on a wide range of scales. Covariant theories of modified gravity generically predict the existence of extra degrees of freedom which may be interpreted as dark matter. We study a subclass of these theories where the overall energy density in these extra degrees of freedom is subdominant relative to the baryon density and show that they favour the presence of massive neutrinos. For some specific cases (such as a flat Universes with a cosmological constant) one finds a conservative lower bound on the neutrinos mass of $m_{\nu }>0.31$ eV.

arXiv comment5 pages, 2 figures, 2 tables, submitted to Phys. Rev. D

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Cited by in corpus (13)

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• Cosmology and Fundamental Physics with the Euclid Satellite
• Cosmology and fundamental physics with the Euclid satellite
• Testing General Relativity in Cosmology
• The Tensor-Vector-Scalar theory and its cosmology
• Vector field models of modified gravity and the dark sector
• The Dark Matter equation of state through cosmic history
• Einstein's Theory of Gravity and the Problem of Missing Mass
• Scalars, Vectors and Tensors from Metric-Affine Gravity
• The Geometry Of Modified Newtonian Dynamics
• FRW cosmology in Milgrom's bimetric theory of gravity
• Testing the tensor-vector-scalar Theory with the latest cosmological observations
• Power-law solutions for TeVeS