Einstein-Cartan gravity with scalar-fermion interactions
| Autor: | Gulgasyl Nugmanova, Nurzhan Serikbayev, Yerlan Myrzakulov, Ratbay Myrzakulov, Olga Razina |
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| Rok vydání: | 2012 |
| Předmět: |
High Energy Physics - Theory
Gravity (chemistry) Cosmology and Nongalactic Astrophysics (astro-ph.CO) Fermionic field QC1-999 Scalar (mathematics) FOS: Physical sciences General Physics and Astronomy General Relativity and Quantum Cosmology (gr-qc) Astrophysics einstein-cartan gravity General Relativity and Quantum Cosmology Metric expansion of space symbols.namesake High Energy Physics - Phenomenology (hep-ph) Einstein Mathematical physics Condensed Matter::Quantum Gases Physics f-essence Equation of state (cosmology) g-essence Fermion High Energy Physics - Phenomenology High Energy Physics - Theory (hep-th) symbols k-essence Astrophysics - Cosmology and Nongalactic Astrophysics |
| Zdroj: | Open Physics, Vol 10, Iss 1, Pp 47-50 (2012) |
| ISSN: | 2391-5471 |
| DOI: | 10.2478/s11534-011-0102-8 |
| Popis: | 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. Comment: 6 pages, title is changed |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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