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2008

Stochastic tunneling for strongly non-Gaussian inflationary theories

Tolley, Andrew J., Wyman, Mark

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We reconsider the dynamics of stochastic or thermal tunneling in theories like Dirac-Born-Infeld inflation that have non-minimal kinetic terms and, as a result, strongly non-Gaussian perturbations.

We first describe a local description of the tunneling process which gives results consistent with the standard Hawking-Moss tunneling.
This result is under perturbative control as long as the fluctuation determinant is well approximated by a one-loop integral.
We then move to a global description, using the methodology of stochastic inflation and the in-in path integral formalism.

Stochastic tunneling for strongly non-Gaussian inflationary theories · Around

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A. J. Tolley and M. Wyman, “Stochastic Inflation Revisited: Non-Slow Roll Statistics and DBI Inflation,” arXiv:0801.1854 [hep-th]

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L. Leblond and S. Shandera, “Simple Bounds from the Perturbative Regime of Inflation,” arXiv:0802.2290 [hep-th]

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D. Wohns, “Hawking-Moss Tunneling with a Dirac-Born-Infeld Action,” arXiv:0802.0623 [hep-th]

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