NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Cosmic microwave background probes models of inflationInflation creates both scalar (density) and tensor (gravity wave) metric perturbations. We find that the tensor-mode contribution to the cosmic microwave background anisotropy on large-angular scales can only exceed that of the scalar mode in models where the spectrum of perturbations deviates significantly from scale invariance. If the tensor mode dominates at large-angular scales, then the value of DeltaT/T predicted on 1 deg is less than if the scalar mode dominates, and, for cold-dark-matter models, bias factors greater than 1 can be made consistent with Cosmic Background Explorer (COBE) DMR results.
Document ID
19930026358
Document Type
Reprint (Version printed in journal)
Authors
Davis, Richard L.
(Pennsylvania Univ. Philadelphia, United States)
Hodges, Hardy M.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Smoot, George F.
(Lawrence Berkeley Lab. Berkeley, CA, United States)
Steinhardt, Paul J.
(Pennsylvania Univ. Philadelphia, United States)
Turner, Michael S.
(Chicago Univ.; NASA/Fermilab Astrophysics Center Batavia, IL, United States)
Date Acquired
August 15, 2013
Publication Date
September 28, 1992
Publication Information
Publication: Physical Review Letters
Volume: 69
Issue: 13
ISSN: 0031-9007
Subject Category
Space Radiation
Funding Number(s)
CONTRACT_GRANT: NSF PHY-89-04035
CONTRACT_GRANT: NAGW-931
CONTRACT_GRANT: DE-EY-76-C-02-3071
CONTRACT_GRANT: NAGW-2381
CONTRACT_GRANT: DE-AC03-76SF-00098
Distribution Limits
Public
Copyright
Other
No Preview Available