Speaker
Dr
Koji Ishiwata
(Kanazawa University)
Description
We consider D-term hybrid inflation in the framework of
superconformal supergravity. In part of the parameter space,
inflation continues for subcritical inflaton field value.
Consequently, a new type of inflation emerges, which gives
predictions for the scalar spectral index and the tensor-to-scalar
ratio that are consistent with the Planck 2015 results. The
potential in the subcritical regime is found to have a similar
structure to one in the simplest class of superconformal $\alpha$
attractors.
Parallel Session | Cosmology and Gravitational Waves |
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Author
Dr
Koji Ishiwata
(Kanazawa University)