A model to explain varying Lambda , G and sigma super(2) simultaneously
Models with varying cosmic parameters, which were earlier regarded constant, are getting attention. However, different models are usually invoked to explain the evolution of different parameters. We argue that whatever physical process is responsible for the evolution of one parameter, should also b...
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| Published in | General relativity and gravitation Vol. 37; no. 7; pp. 1305 - 1311 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
01.07.2005
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| Online Access | Get full text |
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| Summary: | Models with varying cosmic parameters, which were earlier regarded constant, are getting attention. However, different models are usually invoked to explain the evolution of different parameters. We argue that whatever physical process is responsible for the evolution of one parameter, should also be responsible for the evolution of others. This means that the different parameters are coupled together somehow. Based on this guiding principle, we investigate a Bianchi type I model with variable Lambda and G, in which Lambda , G and the shear parameter sigma super(2), all are coupled. It is interesting that the resulting model reduces to the FLRW model for large t with G approaching a constant. |
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| Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 content type line 23 ObjectType-Feature-2 |
| ISSN: | 0001-7701 1572-9532 |
| DOI: | 10.1007/s10714-005-0113-0 |