Linear Term Inflation from Running Kinetic Term in Supergravity(Chapter I: Models of the early universe,Cosmology-The Next Generation-)

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概要

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• We propose a new class of inflation models in which the coefficient of the inflaton kinetic term rapidly changes with energy scale. This naturally occurs especially if the inflaton moves over a long distance during inflation as in the case of large-scale inflation. The peculiar behavior of the kinetic term opens up a new way to construct an inflation model. As a concrete example we construct a linear inflation model in supergravity. It is straightforward to build a chaotic inflation model with a fractional power along the same line. Interestingly, the potential takes a different form after inflation because of the running kinetic term.

• 2011-10-31

著者

• TAKAHASHI Fuminobu

  Institute for the Physics and Mathematics of the Universe, University of Tokyo

• Takahashi Fuminobu

  Institute For Cosmic Ray Research University Of Tokyo

• TAKAHASHI Fuminobu

  Institute for the Physics and Mathematics of the Universe, The University of Tokyo

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