A. B. Pavan, E. Abdalla, S. Micheletti, E. G. M. Ferreira, J. C. C. de Souza
We extend the First Order Formalism for cosmological models, developed
including an interaction between a fermionic and a scalar field. Cosmological
exact solutions, describing universes filled with interacting dark energy and
dark matter, have been obtained. We suggest some alternative couplings that
yield solutions for the scalar field that could model the present expansion of
our universe.
View original:
http://arxiv.org/abs/1111.6526
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