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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
Journal publication date17/12/2010
JournalPhysical Review D – Particles and Fields
Number of pages10
Original languageEnglish


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.

Bibliographic note

© 2010 The American Physical Society