CMB probes on the correlated axion isocurvature perturbation

Kenji Kadota, Jinn Ouk Gong, Kiyotomo Ichiki, Takahiko Matsubara

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

We explore the possible cosmological consequence of the gravitational coupling between the inflaton and axion-like fields. In view of the forthcoming cosmic microwave background (CMB) polarization and lensing data, we study the sensitivity of the CMB data on the cross-correlation between the curvature and axion isocurvature perturbations. Through a concrete example, we illustrate the explicit dependence of the scale dependent cross-correlation power spectrum on the axion parameters.

Original languageEnglish
Article number026
JournalJournal of Cosmology and Astroparticle Physics
Volume2015
Issue number3
DOIs
StatePublished - 13 Mar 2015

Keywords

  • Axions
  • Cosmological parameters from CMBR

Fingerprint

Dive into the research topics of 'CMB probes on the correlated axion isocurvature perturbation'. Together they form a unique fingerprint.

Cite this