Non-minimally coupled condensate cosmologies: a phase space analysis

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10290430" target="_blank" >RIV/00216208:11320/14:10290430 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1088/0264-9381/31/18/185007" target="_blank" >http://dx.doi.org/10.1088/0264-9381/31/18/185007</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/0264-9381/31/18/185007" target="_blank" >10.1088/0264-9381/31/18/185007</a>

Result language
angličtina
Original language name
Non-minimally coupled condensate cosmologies: a phase space analysis
Original language description
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 ofaccelerated 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.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BE - Theoretical physics
OECD FORD branch
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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