Superconformal Subcritical Hybrid Inflation

26 Jul 2018, 17:40
Plaza 8

Plaza 8


Dr Koji Ishiwata (Kanazawa University)


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 $\alpha$

Parallel Session Cosmology and Gravitational Waves

Primary author

Dr Koji Ishiwata (Kanazawa University)

Presentation materials