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- W3104568425 abstract "In this work we consider a DBI Galileon (DBIG) inflationary model and constrain its parameter space with the Planck 2015 and BICEP2/Keck array and Planck (BKP) joint analysis data by means of a potential independent analysis. We focus our attention on inflationary solutions characterized by a constant or varying sound speed as well as warp factor. We impose bounds on stringy aspects of the model, such as the warp factor $left(fright)$ and the induced gravity parameter $left(tilde{m}right)$. We study the parameter space of the model and find that the tensor-to-scalar ratio can be as low as $rsimeq6times10^{-4}$ and inflation happens to be at GUT scale. In addition, we obtain the tilt of the tensor power spectrum and test the standard inflationary consistency relation $left(r=-8n_{t}right)$ against the latest bounds from the combined results of BKP+Laser Interferometer Gravitational-Waves Observatory (LIGO), and find that DBIG inflation predicts a red spectral index for the tensor power spectrum." @default.
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- W3104568425 date "2016-02-25" @default.
- W3104568425 modified "2023-10-06" @default.
- W3104568425 title "DBI Galileon inflation in the light of Planck 2015" @default.
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- W3104568425 doi "https://doi.org/10.1088/1475-7516/2016/02/063" @default.
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