Work

Wiggles in the cosmic microwave background radiation: Echoes from nonsingular cyclic inflation

Year: 2010

Type: article

Abstract: In this paper we consider a unique model of inflation where the universe undergoes rapid asymmetric oscillations, each cycle lasting $\ensuremath{\sim}{10}^{6}$ Planck times. Over many, many cycles the space-time expands to mimic the standard inflationary scenario. Moreover, these rapid oscillations leave a distinctive periodic signature in $\mathrm{ln}k$ in the primordial power spectrum, where $k$ denotes the comoving scale. Although the cyclic-inflation model contains additional parameters as compared to the standard power-law spectrum, the improvement to the fit of the 7-year WMAP data is significant.

Source: Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields

DOI: 10.1103/physrevd.82.123517

Authors: Tirthabir Biswas, Anupam Mazumdar, Arman Shafieloo

Institutions: Loyola University New Orleans, St. Cloud State University, Lancaster University, University of Oxford

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2028916062

FWCI: 2.529

Cites: 44

Cited by: 41

Related to: 10