Unified Model of k-Inflation, Dark Matter and Dark Energy - Astrophysics > Cosmology and Nongalactic AstrophysicsReportar como inadecuado




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Abstract: We present a \textit{k}-essence model where a single scalar field isresponsible for the early expansion of the universe through the process of\textit{k}-inflation and at appropriate subsequent stages acts both as darkmatter and dark energy. The Lagrangian contains a potential for the scalarfield as well as a non-canonical kinetic term, and is of the form $FXV\phi$which has been widely used as a \textit{k}-essence Lagrangian. After the periodof inflation is over the model can be approximated as purely kinetic\textit{k}-essence, generating dark matter and dark energy at late times. Weshow how observational results are used to put constraints on the parameters ofthis model.



Autor: N. Bose, A. S. Majumdar

Fuente: https://arxiv.org/







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