Mathematics – Logic
Scientific paper
Jul 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984stin...8527786p&link_type=abstract
Presented at Intern. School of Phys. Enrico Fermi, Varenna, Italy, 26 Jun. - 6 Jul. 1984
Mathematics
Logic
Cosmology, Dark Matter, Galactic Evolution, Unified Field Theory, Universe, Adiabatic Conditions, Gravitational Collapse, High Energy Interactions, Mass Distribution, Spectrum Analysis
Scientific paper
Current research on the nature of the cosmological dark matter and the origin of galaxies, clusters, superclusters and voids are presented. The observational data is reviewed and a tentative theoretical framework within which it can be interpreted: gravitational collapse of fluctuations as the origin of structure in an expanding universe is introduced. General relativistic cosmology is summarized, the data on the basic cosmological parameters reviewed and the theory of the growth and collapse of fluctuations is introduced. The idea of cosmological inflation, and critique of a proposal to modify gravity as an alternative to dark matter are outlined. Arguments that dark matter is nonbaryonic are summarized, and the standard astrophysical classification of varieties of dark matter is introduced: hot (free streaming erases all but supercluster-size fluctuations), warm (free streaming erases fluctuations smaller than large galaxies), and cold (free streaming is cosmologically unimportant). The various particle physics candidates for dark matter are reviewed, together with possible tests that could constrain or eliminate them.
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