Bianchi VI0&III models: self-similar approach
We study several cosmological models with Bianchi VI0&III symmetries under the self-similar approach. We find new solutions for the 'classical' perfect fluid model as well as for the vacuum model although they are really restrictive for the equation of state. We also study a perfect fl...
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| Veröffentlicht in: | Classical and quantum gravity 2009-09, Vol.26 (17), p.175003-175003 (17) |
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| container_end_page | 175003 (17) |
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| container_issue | 17 |
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| container_title | Classical and quantum gravity |
| container_volume | 26 |
| creator | BELINCHON, José Antonio |
| description | We study several cosmological models with Bianchi VI0&III symmetries under the self-similar approach. We find new solutions for the 'classical' perfect fluid model as well as for the vacuum model although they are really restrictive for the equation of state. We also study a perfect fluid model with time-varying constants, G and Delta *L. As in other studied models we find that the behaviour of G and Delta *L are related. If G behaves as a growing time function then Delta *L is a positive decreasing time function but if G is decreasing then Delta *L0 is negative. We end by studying a massive cosmic string model, putting special emphasis in calculating the numerical values of the equations of state. We show that there is no SS solution for a string model with time-varying constants. |
| doi_str_mv | 10.1088/0264-9381/26/17/175003 |
| format | Article |
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| source | IOP Publishing Journals; Institute of Physics (IOP) Journals - HEAL-Link |
| subjects | Exact sciences and technology General relativity and gravitation Physics |
| title | Bianchi VI0&III models: self-similar approach |
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