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arxiv: 1012.5690 · v2 · submitted 2010-12-28 · 🌌 astro-ph.CO · gr-qc· hep-ph· hep-th

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Einstein-Cartan gravity with scalar-fermion interactions

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classification 🌌 astro-ph.CO gr-qchep-phhep-th
keywords einstein-cartanacceleratedexpansionsolutiontheoryanalyticalcasecases
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In this paper, we have considered the g-essence and its particular cases, k-essence and f-essence, within the framework of the Einstein-Cartan theory. We have shown that a single fermionic field can give rise to the accelerated expansion within the Einstein-Cartan theory. The exact analytical solution of the Einstein-Cartan-Dirac equations is found. This solution describes the accelerated expansion of the Universe with the equation of state parameter $w=-1$ as in the case of $\Lambda$CDM model.

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