Dark matter as a dynamic effect due to a non-minimal gravitational coupling with matter (I): Analytical results

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2010

Autores

Bertolami, O (Autor) FCUP; Paramos, J (Autor) Outra

Ata de Conferência Internacional

Título: FIRST MEDITERRANEAN CONFERENCE ON CLASSICAL AND QUANTUM GRAVITY (MCCQG 2009)

Página Final: 012010

1st Mediterranean Conference on Classical and Quantum Gravity (MCCQG)

Kolymbari, GREECE, SEP 14-18, 2009

Indexação

ISI Web of Knowledge - 11 Citações

Scopus - 10 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Física

Outras Informações

ID Authenticus: P-003-AYP

DOI: 10.1088/1742-6596/222/1/012010

Abstract (EN): In this work the phenomenology of models possessing a non-minimal coupling between matter and geometry is discussed, with a particular focus on the possibility of describing the flattening of the galactic rotation curves as a dynamically generated effect derived from this modification to General Relativity. Two possibilities are discussed: firstly, that the observed discrepancy between the measured rotation velocity and the classical prediction is due to a deviation from geodesic motion, due to a non-(covariant) conservation of the energy-momentum tensor; secondly, that even if the principle of energy conservation holds, the dynamical effects arising due to the non-trivial terms in the Einstein equations of motion can give rise to an extra density contribution that may be interpreted as dark matter. In this work, The mechanism of the latter alternative is detailed; a numerical session ascertaining the order of magnitude of the relevant parameters is undertaken in another contribution to this volume, with possible cosmological implications discussed.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 13