Details

Autor(en) / Beteiligte

• Chamseddine, Ali H.
• Mukhanov, Viatcheslav

Titel

Mimetic dark matter

Ist Teil von

• The journal of high energy physics, 2013-11, Vol.2013 (11), p.1-5, Article 135

Ort / Verlag

Berlin/Heidelberg: Springer Berlin Heidelberg

Erscheinungsjahr

2013

Quelle

2022 ECC(Springer)

Beschreibungen/Notizen

• 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.