On a phenomenology of the accelerated expansion with a varying ghost dark energy
| Autor: | M. Zh. Khurshudyan, Andrey N. Makarenko |
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| Rok vydání: | 2016 |
| Předmět: |
Physics
Cold dark matter 010308 nuclear & particles physics FOS: Physical sciences Astronomy and Astrophysics General Relativity and Quantum Cosmology (gr-qc) Astrophysics::Cosmology and Extragalactic Astrophysics 01 natural sciences General Relativity and Quantum Cosmology Theoretical physics Space and Planetary Science 0103 physical sciences Dark energy 010303 astronomy & astrophysics Luminosity distance |
| Zdroj: | Astrophysics and Space Science. 361 |
| ISSN: | 1572-946X 0004-640X |
| DOI: | 10.1007/s10509-016-2775-3 |
| Popis: | Subject of our study it is the accelerated expansion of the large scale universe, where a varying ghost dark energy can take the role of the dark energy. The model of the varying ghost dark energy considered in this work it is a phenomenological modification of the ghost dark energy. Recently, three other phenomenological models of the varying ghost dark energy have been suggested and the model considered in this work will complete the logical chain of considered modifications. The best fit of theoretical results to the luminosity distance, has been used to obtain preliminary constraints on the parameters of the models. This does help us to reduce amount of discussion. On the other hand, detailed comparison of theoretical results with observational data has been left as a subject of another discussion elsewhere. Moreover, a look to considered models via $Om$ and statefinder hierarchy analysis is presented and discussed for different forms of interaction between the varying ghost dark energy and cold dark matter. |
| Databáze: | OpenAIRE |
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