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 language | English |
|---|---|
| Article number | 026 |
| Journal | Journal of Cosmology and Astroparticle Physics |
| Volume | 2015 |
| Issue number | 3 |
| DOIs | |
| State | Published - 13 Mar 2015 |
Bibliographical note
Publisher Copyright:© 2015 IOP Publishing Ltd and Sissa Medialab srl.
Keywords
- Axions
- Cosmological parameters from CMBR
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