Tunneling in axion monodromy

被引:20
作者
Brown, Jon [1 ]
Cottrell, William [1 ]
Shiu, Gary [1 ]
Soler, Pablo [1 ]
机构
[1] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA
关键词
Cosmology of Theories beyond the SM; Nonperturbative Effects; FALSE VACUUM; INFLATION; NEUTRALIZATION;
D O I
10.1007/JHEP10(2016)025
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
The Coleman formula for vacuum decay and bubble nucleation has been used to estimate the tunneling rate in models of axion monodromy in recent literature. However, several of Coleman's original assumptions do not hold for such models. Here we derive a new estimate with this in mind using a similar Euclidean procedure. We find that there are significant regions of parameter space for which the tunneling rate in axion monodromy is not well approximated by the Coleman formula. However, there is also a regime relevant to large field inflation in which both estimates parametrically agree. We also briefly comment on the applications of our results to the relaxion scenario.
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页数:23
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