Vieira, J P P, Byrnes, Christian T and Lewis, Antony (2018) Can power spectrum observations rule out slow-roll inflation? Journal of Cosmology and Astroparticle Physics. ISSN 1475-7516

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Abstract

The spectral index of scalar perturbations is an important observable that allows us to learn about inflationary physics. In particular, a detection of a significant deviation from a constant spectral index could enable us to rule out the simplest class of inflation models. We investigate whether future observations could rule out canonical single-field slow- roll inflation given the parameters allowed by current observational constraints. We find that future measurements of a constant running (or running of the running) of the spectral index over currently available scales are unlikely to achieve this. However, there remains a large region of parameter space (especially when considering the running of the running) for falsifying the assumed class of slow-roll models if future observations accurately constrain a much wider range of scales.

Item Type:	Article
Schools and Departments:	School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects:	Q Science > QB Astronomy
Depositing User:	Billy Wichaidit
Date Deposited:	15 Jan 2018 15:16
Last Modified:	15 Jan 2018 15:16
URI:	http://sro.sussex.ac.uk/id/eprint/72829

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