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Implications of a class of grand unified theories for large scale structure in the universeA class of grand unified theories in which cosmologicaly significant axion and neutrino energy densities arise naturally is discussed. To obtain large scale structure three scenarios are considered: (1) an inflationary scenario; (2) inflation followed by string production; and (3) a non-inflationary scenario with density fluctuations caused solely by strings. Inflation may be compatible with the recent observational indications that mega 1 on the scale of superclusters, particularly if strings are present.
Document ID
19840027169
Acquisition Source
Legacy CDMS
Document Type
Preprint (Draft being sent to journal)
Authors
Shafi, Q. (Delaware Univ. Newark, United States)
Stecker, F. W. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
September 4, 2013
Publication Date
January 1, 1983
Subject Category
Astrophysics
Report/Patent Number
NAS 1.15:86146
NASA-TM-86146
Accession Number
84N35240
Funding Number(s)
CONTRACT_GRANT: DE-AC02-73ER-05007
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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