Mimetic dark matter

A bstract We modify Einstein’s theory of gravity, isolating the conformal degree of freedom in a covariant way. This is done by introducing a physical metric defined in terms of an auxiliary metric and a scalar field appearing through its first derivatives. The resulting equations of motion split in...

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Published inThe journal of high energy physics Vol. 2013; no. 11; pp. 1 - 5
Main Authors Chamseddine, Ali H., Mukhanov, Viatcheslav
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 01.11.2013
Springer Nature B.V
Subjects
Classical and Quantum Gravitation
Dark matter
Degrees of freedom
Derivatives
Differential equations
Elementary Particles
Equations of motion
Gravitation
High energy physics
Mathematical analysis
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Relativity Theory
Scalars
String Theory
Classical Theories of Gravity
Cosmology of Theories beyond the SM
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Summary:A bstract We modify Einstein’s theory of gravity, isolating the conformal degree of freedom in a covariant way. This is done by introducing a physical metric defined in terms of an auxiliary metric and a scalar field appearing through its first derivatives. The resulting equations of motion split into a traceless equation obtained through variation with respect to the auxiliary metric and an additional differential equation for the trace part. As a result the conformal degree of freedom becomes dynamical even in the absence of matter. We show that this extra degree of freedom can mimic cold dark matter.
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ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP11(2013)135