Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988esasp.283..157n&link_type=abstract
In ESA, Space Science and Fundamental Physics p 157-163 (SEE N89-11638 02-88)
Astronomy and Astrophysics
Astrophysics
Astronomical Models, Big Bang Cosmology, Grand Unified Theory, Universe, Dark Matter, Density Distribution, Gauge Invariance, Missing Mass (Astrophysics), String Theory
Scientific paper
The interface between particle physics and cosmology, particularly inflationary cosmology, is reviewed. Grand unified theories (GUT) and Big Bang Cosmology (BBC) are discussed. The standard model of particle physics was extended to GUTs, super GUTs or possibly superstring theories, while the standard BBC was extended to contain the inflationary era. Inflation predicts omega = 1 and adiabatic, scale invariant energy density perturbations, which will be tested in experiment. Present experimental values are much smaller than one, but it seems that mass is being missed (better light), and there is dark matter that may close the Universe. Particle theory provides a list of candidates, e.g., photino, massive neutrino, axion, for dark matter and particle experimenters are building dark matter detectors to test these ideas. Developments in galaxy formation and observational developments on the large structure of the Universe, may put under severe test the ideas of scale-invariant energy density perturbations.
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