2013

Primordial Anisotropies in Gauged Hybrid Inflation

Abolhasani, Ali Akbar, Emami, Razieh, Firouzjahi, Hassan

Understand

We study primordial anisotropies generated in the model of gauged hybrid inflation in which the complex waterfall field is charged under a $U(1)$ gauge field.

Primordial anisotropies are generated either actively during inflation or from inhomogeneities modulating the surface of end of inflation during waterfall transition.
We present a consistent $\delta N$ mechanism to calculate the anisotropic power spectrum and bispectrum.
We show that the primordial anisotropies generated at the surface of end of inflation do not depend on the number of e-folds and therefore do not produce dangerously large anisotropies associated with the IR modes.

Built on

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