Fuente: IOPscience: latest papers
Expuesto el: martes, 01 de junio de 2010 1:00
Autor: Sudipta Das, Subir Ghosh, Jan-Willem van Holten and Supratik Pal
Asunto: Generalized particle model: A possible source for Dark Energy
| We propose a generalized particle dynamics scenario in brane world formalisms, for an asymptotically flat as well as for an asymptotically anti de Sitter background. The generalization implies that the effective mass of the particle becomes dynamical. The present framework results in a new model that accounts for the late acceleration of the universe. An effective Dark Energy equation of state, exhibiting a phantom like behavior, is generated. The model is derived by embedding the physical FRW universe in an effective space-time, induced by the generalized particle dynamics. We corroborate our results with present day observed cosmological parameters. |
