Non scale-invariant density perturbations from chaotic extended inflation
Technical Report
·
OSTI ID:5877167
Chaotic inflation is analyzed in the frame of scalar-tensor theories of gravity. Fluctuations in the energy density arise from quantum fluctuations of the Brans-Dicke field and of the inflation field. The spectrum of perturbations is studied for a class of models: it is non scale-invarient and, for certain values of the parameters, it has a peak. If the peak appears at astrophysically interesting scales, it may help to reconcile the Cold Dark Matter scenario for structure formation with large scale observations.
- Research Organization:
- Fermi National Accelerator Lab., Batavia, IL (United States)
- OSTI ID:
- 5877167
- Report Number(s):
- N-92-11947; NASA-CR--189004; NAS--1.26:189004; FERMILAB-PUB--91/203-A; CNN: NAGW-1340
- Country of Publication:
- United States
- Language:
- English
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