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Bulk viscosity and the inflationary universe

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Lettere al Nuovo Cimento (1971-1985)

Summary

Phase transitions from a universe with nonnegligible bulk viscosity to an inflationary one are possible only if viscosity virtually disappears in the process. This suggests the phase change involved is of the type normal fluid to superfluid. Some exact solutions of Einstein equations for a viscous fluid are also given. They show the subtle interplay of viscosity and equations of state.

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Authors and Affiliations

  1. Department of Physics and Astronomy, University of Begina, S4S 0A2, Regina, Sask., Canada

    G. Papini & M. Weiss

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  1. G. Papini
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  2. M. Weiss
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Work partially supported by the Natural Sciences and Engineering Research Council of Canada.

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Papini, G., Weiss, M. Bulk viscosity and the inflationary universe. Lett. Nuovo Cimento 44, 612–616 (1985). https://doi.org/10.1007/BF02746773

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