Double inflation in supergravity and the large scale structure

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.

inflation: hybrid
supergravity
density: fluctuation
cosmic background radiation
cosmic radiation: spectrum
dark matter
galaxy
numerical calculations: interpretation of experiments
bibliography

References(55)

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