Double Inflation in Supergravity and the Large Scale Structure

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 ${\Omega }_0=1$ 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.

19 pages (RevTeX file)

References in corpus (1)

• A Measurement of the Angular Power Spectrum of the Microwave Background Made from the High Chilean Andes

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