PhysRevD.79.083503.pdf (260.06 kB)
Oscillations in the inflaton potential?
journal contribution
posted on 2023-06-08, 00:26 authored by Cédric Pahud, Marc Kamionkowski, Andrew R LiddleWe consider a class of inflationary models with small oscillations imprinted on an otherwise smooth inflaton potential. These oscillations are manifest as oscillations in the power spectrum of primordial perturbations, which then give rise to oscillating departures from the standard cosmic microwave background power spectrum. We show that current data from the Wilkinson Microwave Anisotropy Probe constrain the amplitude of a sinusoidal variation in the inflaton potential to have an amplitude less than 3x10(-5). We anticipate that the smallest detectable such oscillations in Planck will be roughly an order of magnitude smaller, with slight improvements possible with a post-Planck cosmic-variance limited experiment.
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Physical Review DISSN
1550-7998Publisher
American Physical SocietyExternal DOI
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8Volume
79Department affiliated with
- Physics and Astronomy Publications
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Article Number: 083503Full text available
- Yes
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- Yes
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2012-02-06First Open Access (FOA) Date
2016-03-22First Compliant Deposit (FCD) Date
2016-11-10Usage metrics
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