Dark energy and dark matter in interaction

• Grant number: 09/05811-1
• Support Opportunities: Research Grants - Visiting Researcher Grant - International
• Start date: August 15, 2009
• End date: September 14, 2009
• Field of knowledge: Physical Sciences and Mathematics - Physics - Elementary Particle Physics and Fields
• Principal Investigator: Elcio Abdalla
• Grantee: Elcio Abdalla
• Visiting researcher: Bin Wang
• Visiting researcher institution: Fudan University, China
• Host Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

One of the most ambitious possibilities of comprehension of Dark Matter and Dark Energy is to base our research on the construction of a Lagrangean model based on the general standard field theory description of particles and fields. It is a very complex question. The previously studied model of two interacting fluids is not compatible with a Lagrangean formulation. We have thus tried a tachyon Lagrangean for the bosonic fields, as well as phantoms. In such a case we have reported a complete formulation. Our next step isto consider a higgsino model for the dark matter component. (AU)