The fate of small classically stable Q-balls

被引：16

作者：

Levkov, Dmitry ^{[1
,2
]}

Nugaev, Emin ^{[1
,2
]}

Popescu, Andrei ^{[1
,3
,4
]}

机构：

[1] Russian Acad Sci, Inst Nucl Res, 60th October Anniversary Prospect 7a, Moscow 117312, Russia

[2] Moscow Inst Phys & Technol, Inst Skii Per 9, Dolgoprudnyi 141700, Moscow Region, Russia

[3] Moscow MV Lomonosov State Univ, Fac Phys, Moscow 119991, Russia

[4] Univ Cambridge, Dept Appl Math & Theoret Phys, Wilberforce Rd, Cambridge CB3 0WA, England

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2017年 / 12期

关键词：

Nonperturbative Effects; Solitons Monopoles and Instantons; Cosmology of Theories beyond the SM; FALSE VACUUM; DARK-MATTER; BARYOGENESIS; ORIGIN;

D O I：

10.1007/JHEP12(2017)131

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 smallest classically stable Q-balls are, in fact, generically metastable: in quantum theory they decay into free particles via collective tunneling. We derive general semiclassical method to calculate the rate of this process in the entire kinematical region of Q-ball metastability. Our method uses Euclidean field-theoretical solutions resembling the Coleman's bounce and fluctuations around them. As an application of the method, we numerically compute the decay rate to the leading semiclassical order in a particular one-field model. We shortly discuss cosmological implications of metastable Q-balls.

引用

页数：28

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