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Wiggles in the cosmic microwave background radiation: echoes from non-singular cyclic-inflation

Research output: Contribution to journalJournal article


Article number123517
<mark>Journal publication date</mark>17/12/2010
<mark>Journal</mark>Physical Review D – Particles and Fields
Issue number12
Number of pages10
<mark>Original language</mark>English


In this paper we consider a unique model of inflation where the universe undergoes rapid asymmetric oscillations, each cycle lasting millions of Planck time. Over many-many cycles the space-time expands to mimic the standard inflationary scenario. Moreover, these rapid oscillations leave a distinctive periodic signature in ln(k) in the primordial power spectrum, where k denotes the comoving scale. The best fit parameters of the cyclic-inflation model provides a very good fit to the 7-year WMAP data.

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