Double inflation: A possible resolution of the large-scale structure problem
A model is presented for the large-scale structure of the universe in which two successive inflationary phases resulted in large small-scale and small large-scale density fluctuations. This bimodal density fluctuation spectrum in an ..cap omega.. = 1 universe dominated by hot dark matter leads to large-scale structure of the galaxy distribution that is consistent with recent observational results. In particular, large, nearly empty voids and significant large-scale peculiar velocity fields are produced over scales of approx.100 Mpc, while the small-scale structure over less than or equal to 10 Mpc resembles that in a low density universe, as observed. Detailed analytical calculations and numerical simulations are given of the spatial and velocity correlations. 38 refs., 6 figs.
- Research Organization:
- Fermi National Accelerator Lab., Batavia, IL (USA); California Inst. of Tech., Pasadena (USA); Rome Univ. (Italy). Ist. Astronomico; California Univ., Berkeley (USA). Dept. of Astronomy
- DOE Contract Number:
- AC02-76CH03000
- OSTI ID:
- 6839232
- Report Number(s):
- FNAL/Pub-86/158-A; ON: DE87005403
- Country of Publication:
- United States
- Language:
- English
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