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arXiv · hep-ph/9908350

Double Inflation in Supergravity and the Large Scale Structure

Toshiyuki Kanazawa·M. Kawasaki·Naoshi Sugiyama·T. Yanagida
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Abstract

The cosmological implication of a double inflation model with hybrid + new inflations in supergravity is studied. The hybrid inflation drives an inflaton for new inflation close to the origin through supergravity effects and new inflation naturally occurs. If the total e-fold number of new inflation is smaller than $\sim 60$, both inflations produce cosmologically relevant density fluctuations. Both cluster abundances and galaxy distributions provide strong constraints on the parameters in the double inflation model assuming $Ω_0=1$ standard cold dark matter scenario. The future satellite experiments to measure the angular power spectrum of the cosmic microwave background will make a precise determination of the model parameters possible.

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Toshiyuki Kanazawa, M. Kawasaki, Naoshi Sugiyama, T. Yanagida. 2000-05-10. Double Inflation in Supergravity and the Large Scale Structure. https://doi.org/10.1103/physrevd.61.023517

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