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Inflationary Cosmology

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Cosmological Crossroads

Part of the book series: Lecture Notes in Physics ((LNP,volume 592))

Abstract

The big bang model and the history of the early universe according to the grand unified theories are introduced. The shortcomings of big bang are discussed together with their resolution by inflationary cosmology. Inflation, the subsequent oscillation and decay of the inflaton, and the resulting ‘reheating’ of the universe are studied. The density perturbations produced by inflation and the temperature fluctuations of the cosmic background radiation are discussed. The hybrid inflationary model is described. Two ’natural’ extensions of this model which avoid the disaster encountered in its standard realization from the overproduction of monopoles are presented. Successful ‘reheating’ satisfying the gravitino constraint takes place after the end of inflation in all three versions of hybrid inflation. Adequate baryogenesis via a primordial leptogenesis occurs consistently with the solar and atmospheric neutrino oscillation data. The primordial lepton asymmetry is turned partly into baryon asymmetry via the sphalerons which are summarized.

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  1. Physics Division, School of Technology, Aristotle University of Thessaloniki, Thessaloniki, 540 06, Greece

    George Lazarides

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  1. George Lazarides
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  1. Department of Mathematics, University of the Aegean, 83200 Karlovassi, Samos, Greece

    Spiros Cotsakis

  2. Physics Department, National Technical University of Athens, Zografou Campus, 15780, Athens, Greece

    Eleftherios Papantonopoulos

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Lazarides, G. (2002). Inflationary Cosmology. In: Cotsakis, S., Papantonopoulos, E. (eds) Cosmological Crossroads. Lecture Notes in Physics, vol 592. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-48025-0_13

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