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| Autor principal: | |
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| Formato: | Artículo científico |
| Lenguaje: | en |
| Publicado: |
Sociedade Brasileira de Física
2005
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| Materias: | |
| Acceso en línea: | https://www.redalyc.org/articulo.oa?id=46435720 |
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- Is the Cosmological Particle Production Homogeneous? M. de Campo Física, Astronomía y Matemáticas Using a gauge-invariant formalism we find the density contrast equation in a cosmological scenario with particleproduction at the expenses of the gravitational field (open system cosmology). First, we find the modes forthe density contrast considering that the particle production process participate of the inhomogeneities formation,and in a second phase the creation process mimics the inclusion of the a smooth L term , in the sense thatit is not affects small deviations from homogeneity. The cosmic background has an accelerated regime, wherean additional pressure due to the creation process is responsible for the cosmic acceleration. We study in thiswork if the creation process of particles in the cosmic fluid contributes to the inhomogeneities formation in anaccelerated universe. 2005 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46435720 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.4B Vol.35