R^2 dark matter
There is a non-trivial four-derivative extension of the gravitational spectrum that is free of ghosts and phenomenologically viable. It is the so called R^2-gravity since it is defined by the only addition of a term proportional to the square of the scalar curvature. Just the presence of this term d...
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| Format: | article |
| Publication Date: | 2011 |
| Country: | España |
| Institution: | Universidad Complutense de Madrid (UCM) |
| Repository: | Docta Complutense |
| Language: | English |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/44919 |
| Online Access: | https://hdl.handle.net/20.500.14352/44919 |
| Access Level: | Open access |
| Keyword: | 53 Cosmological models General-relativity Field-theory Gravity Consequences Inflation Geometry Relics Física (Física) 22 Física |
| Summary: | There is a non-trivial four-derivative extension of the gravitational spectrum that is free of ghosts and phenomenologically viable. It is the so called R^2-gravity since it is defined by the only addition of a term proportional to the square of the scalar curvature. Just the presence of this term does not improve the ultraviolet behaviour of Einstein gravity but introduces one additional scalar degree of freedom that can account for the dark matter of our Universe. |
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