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- Title
Consequences of $$f(R)$$ theories of gravity on gravitational leptogenesis.
- Authors
Lambiase, G.; Mohanty, S.; Pizza, L.
- Abstract
$$f(R)$$ -theories of gravity are reviewed in the framework of the matter-antimatter asymmetry in the Universe. The asymmetry is generated by the gravitational coupling of heavy (Majorana) neutrinos with the Ricci scalar curvature. In order that the mechanism works, a time varying non-zero Ricci curvature is necessary. The latter is provided by $$f(R)$$ cosmology, whose Lagrangian density is of the form $$\mathcal{L}(R)\sim f(R)$$ , with $$f(R)\sim R+\alpha R^n$$ .
- Subjects
GRAVITY; NEUTRINOS; NEUTRONS; LEPTONS (Nuclear physics); UNIVERSE
- Publication
General Relativity & Gravitation, 2013, Vol 45, Issue 9, p1771
- ISSN
0001-7701
- Publication type
Article
- DOI
10.1007/s10714-013-1555-4