Gravitation, Cosmology, and Cosmic-Ray Physics (1986) / Chapter Skim
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11. Introduction -- The Standard Model
11. Introduction -- The Standard Model
Pages 87-89
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From page 87... ...
The renaissance in cosmology was sparked by the realization that the microwave background radiation and the light-element abundances are remnants of a hot big bang, but it has been driven by the successful application of a broad range of observations and theory to difficult cosmological problems. Currently, revolutionary ideas concerning the relationship between microscopic physics and the large-scale structure and evolution of the universe are being actively studied and tested.
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From page 88... ...
The three barriers indicate the epoch beyond which we cannot '~see" via each of the three types of particles. In addition, at energies higher than that available at accelerators we have little direct knowledge of the laws of physics (hence, the dashed curves)
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From page 89... ...
This strong coupling of radiation and matter before the photon barrier also tended to keep the matter from clumping into stars, galaxies, or larger systems bound by gravity. Decoupling of the matter and radiation allowed the process of galaxy formation to begin, leading eventually to the complex largescale structure seen today.
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