Biswas, Tirthabir and Mazumdar, Anupam and Shafieloo, Arman (2010) Wiggles in the cosmic microwave background radiation : echoes from non-singular cyclic-inflation. Physical Review D – Particles and Fields, 82 (12): 123517. ISSN 1550-2368
Abstract
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.