On the dynamics of the power law inflation due to an exponential potential

Jun'ichi Yokoyama, Kei ichi Maeda

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The power law inflationary universe model induced by a scalar field with an exponential potential is studied. A dissipation term due to particle creation is introduced in the inflation's classical equation of motion. It is shown that the power index of the inflation increases prominently with an adequate viscosity. Consequently, even in theories with a rather steep exponential such as some supergravity or superstring models, it turns out that a "realistic" power law inflation (with a power index p{greater-than or approximate}10) is possible.

Original languageEnglish
Pages (from-to)31-35
Number of pages5
JournalPhysics Letters B
Issue number1
Publication statusPublished - 1988 Jun 9


ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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