Exact spherically-symmetric inhomogeneous model with n perfect fluids
We present the exact equations governing the dynamics of a spherically-symmetric inhomogeneous model with n decoupled and non-comoving perfect fluids. Thanks to the use of physically meaningful quantities we write the set of 3+2 n equations in a concise and transparent way. The n perfect fluids can...
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| Main Authors: | , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
9 January 2012
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| In: |
Journal of cosmology and astroparticle physics
Year: 2012, Issue: 1, Pages: 1-32 |
| ISSN: | 1475-7516 |
| DOI: | 10.1088/1475-7516/2012/01/025 |
| Online Access: | Verlag, Volltext: http://dx.doi.org/10.1088/1475-7516/2012/01/025 Verlag, Volltext: http://stacks.iop.org/1475-7516/2012/i=01/a=025 
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| Author Notes: | Valerio Marra, Mikko Pääkkönen |
| Summary: | We present the exact equations governing the dynamics of a spherically-symmetric inhomogeneous model with n decoupled and non-comoving perfect fluids. Thanks to the use of physically meaningful quantities we write the set of 3+2 n equations in a concise and transparent way. The n perfect fluids can have general equations of state, thus making the model extremely flexible to study a large variety of cosmological and astrophysical problems. As applications we consider a model sourced by two non-comoving dust components and a cosmological constant, and a model featuring dust and a dark energy component with negligible speed of sound. |
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| Item Description: | Gesehen am 09.10.2018 |
| Physical Description: | Online Resource |
| ISSN: | 1475-7516 |
| DOI: | 10.1088/1475-7516/2012/01/025 |