Tachyon field inflation in the light of BICEP2
Kourosh Nozari, Narges Rashidi
TL;DR
This paper examines tachyon field inflation models against recent cosmological data, finding that nonminimally coupled models align with observations while minimally coupled ones do not.
Contribution
It compares minimally and nonminimally coupled tachyon inflation models using the latest observational datasets, highlighting the viability of nonminimal coupling.
Findings
Minimally coupled tachyon inflation is inconsistent with combined datasets.
Nonminimally coupled tachyon inflation fits the joint observational data.
The study constrains tachyon inflation models based on recent cosmological measurements.
Abstract
We study tachyon field inflation in the light of the Planck+WMAP+BICEP2+BAO joint data. While the minimally coupled tachyon field inflation is consistent with the Planck2013 data, it is not confirmed by the Planck+WMAP+BICEP2+BAO dataset. However, a nonminimally coupled tachyon field inflation is consistent with this joint dataset.
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