The Early Universe

نویسنده

  • Andrew R. Liddle
چکیده

An introductory account is given of the modern understanding of the physics of the early Universe. Particular emphasis is placed on the paradigm of cosmological inflation, which postulates a period of accelerated expansion during the Universe’s earliest stages. Inflation provides a possible origin for structure in the Universe, such as microwave background anisotropies, galaxies and galaxy clusters; these observed structures can therefore be used to test models of inflation. A brief account is given of other early Universe topics, namely baryogenesis, topological defects, dark matter candidates and primordial black holes. Figure 1: By providing the first measurement of irregularities in the microwave background radiation in 1992, the COBE satellite (artist’s impression, courtesy NASA [reduced resolution in archive version]) revolutionized modern cosmology. Preprint SUSSEX-AST 96/12-1, astro-ph/9612093 Lectures given at the Winter School ‘From Quantum Fluctuations to Cosmological Structures’ in Casablanca, Morocco, December 1996. Please notify any errors to [email protected]

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تاریخ انتشار 2008