Double Inflation in Supergravity and the Large Scale Structure

Details Double Inflation in Supergravity and the Large Scale Structure Double Inflation in Supergravity and the Large Scale Structure

1999-08-13

arxiv.org/abs/hep-ph/9908350v2

Phys.Rev. D61 (2000) 023517

Physics

High Energy Physics

High Energy Physics - Phenomenology

19 pages (RevTeX file)

Scientific paper

10.1103/PhysRevD.61.023517

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.

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