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arXiv · 1312.0709

Coleman-de Luccia instanton in dRGT massive gravity

Ying-li Zhang·Ryo Saito·Dong-han Yeom·Misao Sasaki
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Abstract

We study the Coleman-de Luccia (CDL) instanton characterizing the tunneling from a false vacuum to the true vacuum in a semi-classical way in dRGT (deRham-Gabadadze-Tolley) massive gravity theory, and evaluate the dependence of the tunneling rate on the model parameters. It is found that provided with the same physical Hubble parameters for the true vacuum $H_{\rm T}$ and the false vacuum $H_{\rm F}$ as in General Relativity (GR), the thin-wall approximation method implies the same tunneling rate as GR. However, deviations of tunneling rate from GR arise when one goes beyond the thin-wall approximation and they change monotonically until the Hawking-Moss (HM) case. Moreover, under the thin-wall approximation, the HM process may dominate over the CDL one if the value for the graviton mass is larger than the inverse of the radius of the bubble.

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Ying-li Zhang, Ryo Saito, Dong-han Yeom, Misao Sasaki. 2014-02-14. Coleman-de Luccia instanton in dRGT massive gravity. https://doi.org/10.1088/1475-7516%2F2014%2F02%2F022

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