__smbhome.uscs.susx.ac.uk_bw233_Desktop_SRO_SRO - Christian Byrnes_running_vs_slow_roll.pdf (1.36 MB)
Can power spectrum observations rule out slow-roll inflation?
journal contribution
posted on 2023-06-09, 11:37 authored by J P P Vieira, Christian ByrnesChristian Byrnes, Antony LewisAntony LewisThe 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.
Funding
Astrophysics and Cosmology - Sussex Consolidated Grant; G1291; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/L000652/1
History
Publication status
- Published
File Version
- Accepted version
Journal
Journal of Cosmology and Astroparticle PhysicsISSN
1475-7516Publisher
IOP PublishingExternal DOI
Issue
1Volume
2018Page range
019 1-21Department affiliated with
- Physics and Astronomy Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2018-01-15First Open Access (FOA) Date
2019-01-12First Compliant Deposit (FCD) Date
2018-01-15Usage metrics
Categories
No categories selectedKeywords
Licence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC