Abstract
A generalized equation of state corresponding to a model that includes a Chaplygin gas and a viscous term is investigated, in the context of the reconstruction program in scalar field cosmology. The corresponding inflationary model parameters can be conveniently adjusted in order to reproduce the most recent PLANCK data. The influence of the Chaplygin gas term contribution, in relation with previous models, is discussed. Exit from inflation is shown to occur quite naturally in the new model.
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Acknowledgements
EE has been supported in part by MINECO (Spain), project FIS2013-44881, by I-LINK1019 from CSIC, and by the CPAN Consolider Ingenio Project. LGTS has been supported by a grant from CAPES Foundation through the PDSE program, process number: 99999.003658/2015-05.
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Elizalde, E., Silva, L.G.T. Inhomogeneous imperfect fluid inflation. Astrophys Space Sci 362, 7 (2017). https://doi.org/10.1007/s10509-016-2988-5
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DOI: https://doi.org/10.1007/s10509-016-2988-5