Institute of Theoretical Physics · Faculty of Mathematics and Physics, Charles University
Class. Quantum Grav. 31, 185007 (2014)
We present an analysis of the phase space of cosmological models based on a
non-minimal coupling between the geometry and a fermionic condensate. We
observe that the strong constraint coming from the Dirac equations allows a
detailed design of the cosmology of these models, and at the same time
guarantees an evolution towards a state indistinguishable from general relativistic
cosmological models. In this light, we show in detail how the use of
some specific potentials can naturally reproduce a phase of accelerated
expansion. In particular, we find for the first time that an exponential potential
is able to induce two de Sitter phases separated by a power law expansion,
which could be an interesting model for the unification of an inflationary phase
and a dark energy era.
fermion condensate, cosmology, dynamical systems approach, dark energy, non-minimal coupling
@article{UTF523,
author = {Carloni, S. and Vignolo, S. and Cianci, R.},
title = {{Non-minimally coupled condensate cosmologies: a phase space analysis}},
journal = {Class. Quantum Grav.},
volume = {31},
pages = {185007},
year = {2014},
doi = {10.1088/0264-9381/31/18/185007},
}