Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985s%26t....69..112d&link_type=abstract
Sky and Telescope (ISSN 0037-6604), vol. 69, Feb. 1985, p. 112-115.
Astronomy and Astrophysics
Astrophysics
Big Bang Cosmology, Universe, Domain Wall, Magnetic Monopoles, Missing Mass (Astrophysics), Quantum Theory, Space-Time Functions, Strings
Scientific paper
The cosmological implications of the grand unified theories (GUTs) of physics are discussed as they may apply to astronomically observable phenomena, in a review for general readers. The fundamental principle is that only gravity and a superforce (uniting the strong nuclear force, electromagnetic force, and the weak nuclear force) existed during the interval between 10 to the -43rd and 10 to the -35th second at the beginning of the Big Bang, as the universe cooled from 10 to the 32nd to 10 to the 28th K; and that defects in the quantum field describing the forces were frozen into the structure of the universe. The major defect types are characterized: two-dimensional domain walls which either exist far beyond the observable cosmos or disappeared very early, one-dimensional cosmic strings which may account for some gravitational-lens effects or for the origin of galaxies, and massive pointlike magnetic monopoles which could represent the missing mass of the universe. The cosmological problems with GUTs predictions of large numbers of monopoles are indicated, and the unsuccessful experimental attempts to detect them are noted.
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