Double Inflation Metadata

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Title

  • Main Title Double Inflation

Creator

  • Author: Silk, J.
    Creator Type: Personal
  • Author: Turner, M. S.
    Creator Type: Personal

Publisher

  • Name: California Univ., Berkeley (USA). Dept. of Astronomy
    Place of Publication: United States
  • Name: Fermi National Accelerator Laboratory
    Place of Publication: Batavia, Illinois
    Additional Info: Fermi National Accelerator Lab., Batavia, IL (USA)
  • Name: Enrico Fermi Institute
    Place of Publication: Chicago, Illinois
    Additional Info: Chicago Univ., IL (USA). Enrico Fermi Inst.

Date

  • Creation: 1986-04-01

Language

  • English

Description

  • Content Description: The Zel'dovich spectrum of adiabatic density perturbations is a generic prediction of inflation. There is increasing evidence that when the spectrum is normalized by observational data on small scales, there is not enough power on large scales to account for the observed large-scale structure in the Universe. Decoupling the spectrum on large and small scales could solve this problem. As a means of decoupling the large and small scales we propose double inflation (i.e., two episodes of inflation). In this scenario the spectrum on large scales is determined by the first episode of inflation and those on small scales by a second episode of inflation. We present three models for such a scenario. By nearly saturating the large angular-scale cosmic microwave anisotropy bound, we can easily account for the observed large-scale structure. We take the perturbations on small scales to be very large, deltarho/rho approx. = 0.1 to 0.01, which results in the production of primordial black holes (PBHs), early formation of structure, reionization of the Universe, and a rich array of astrophysical events. The ..cap omega..-problem is also addressed by our scenario. Allowing the density perturbations produced by the second episode of inflation to be large also lessens the fine-tuning required in the scalar potential and makes reheating much easier. We briefly speculate on the possibility that the second episode of inflation proceeds through the nucleation of bubbles, which today manifest themselves as empty bubbles whose surfaces are covered with galaxies. 37 refs., 1 fig.
  • Physical Description: 32 pages

Subject

  • Keyword: Cosmological Models
  • Keyword: Universe
  • Keyword: Galaxies
  • Keyword: Inflation
  • STI Subject Categories: 71 Classical And Quantum Mechanics, General Physics
  • Keyword: Black Holes
  • Keyword: Nonlinear Problems
  • Keyword: Mathematical Models 640106* -- Astrophysics & Cosmology-- Cosmology

Source

  • Other Information: Portions of this document are illegible in microfiche products

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report

Format

  • Text

Identifier

  • Other: DE86011022
  • Report No.: FNAL/Pub-86/62-A
  • Grant Number: AC02-76CH03000
  • Grant Number: AC03-76SF00098
  • DOI: 10.2172/5857280
  • Office of Scientific & Technical Information Report Number: 5857280
  • Archival Resource Key: ark:/67531/metadc1094833

Note

  • Display Note: NTIS, PC A03/MF A01; 1.
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