Year: 2009
Type: article
Abstract: The modification of Einstein gravity at high energies is mandatory from a quantum approach. In this work, we point out that this modification necessarily introduces new degrees of freedom. We analyze the possibility that these new gravitational states can provide the main contribution to the nonbaryonic dark matter of the Universe. By following an effective field theory approach, we illustrate this idea with the first and simplest high energy modification of the Einstein-Hilbert action: R2 gravity.
Source: Physical Review Letters
Author: Jose A. R. Cembranos
Institution: University of Minnesota
Language: Latvian
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2008114202