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

• Type: Article in International Conference Proceedings Book
• Date: 2010

Authors

Bertolami, O (Author) FCUP; Paramos, J (Author) Other

Conference proceedings International

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

Final page: 012010

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

Kolymbari, GREECE, SEP 14-18, 2009

Indexing

ISI Web of Knowledge - 11 Citations

Scopus - 10 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 13