Artículos de revistas
Gravity with Extra Dimensions and Dark Matter Interpretation: Phenomenological Example via Miyamoto-Nagai Galaxy
Registro en:
Brazilian Journal Of Physics. Springer, v. 42, n. 41671, n. 100, n. 109, 2012.
0103-9733
WOS:000305562300013
10.1007/s13538-012-0059-0
Autor
Letelier, P
Coimbra-Araujo, CH
Institución
Resumen
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Any connection between dark matter and extra dimensions is revealed by the effective energy-momentum tensor associated with the theory. In order to investigate and test such a relationship, we examine a higher-dimensional space-time endowed with a factorizable general metric with a configuration such that its density profile coincides with the Newtonian potential for disk galaxies. An appropriate solution representing stratifications of mass in the central-bulge and disk part of galaxies, e.g., the Miyamoto-Nagai ansatz, is used to solve the Einstein equations. We compute the stable rotation curves of such systems and, with no adjustable parameters, accurately recover the observational data for flat or not asymptotically flat galaxy rotation curves. We present examples of density profiles and compare them to the profile obtained from purely Newtonian potentials. 42 41671 100 109 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) CAPES [3874-07-9]