Bubble Nucleation Rate In Fourth-Order Gravity
Abstract
We calculate the bubble nucleation rate in a fourth-order gravity theory whose action contains an R2 term, under the thin-wall approximation, by two different methods. First the bounce solution is found for the Euclidean version of the original action. Next, we use a conformal transformation to transform the theory into general relativity with an additional scalar field and then proceed to find the bounce solution. The same results are obtained from both calculations.
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