The fate of small classically stable Q-balls

Abstract

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.

arXiv comment31 pages, 11 figures; journal version

References in corpus (19)

• A 3% Solution: Determination of the Hubble Constant with the Hubble Space Telescope and Wide Field Camera 3
• Viewing the Shadow of the Black Hole at the Galactic Center
• Supersymmetric Q-balls as dark matter
• The origin of the matter-antimatter asymmetry
• Q-Balls and Baryogenesis in the MSSM
• Carnegie Hubble Program: A Mid-Infrared Calibration of the Hubble Constant
• Cosmological consequences of MSSM flat directions
• B-ball Baryogenesis and the Baryon to Dark Matter Ratio
• Small Q balls
• Q-ball candidates for self-interacting dark matter
• Thermodynamics of Non-Topological Solitons
• Analytical and numerical properties of Q-balls
• Supermassive dark-matter Q-balls in galactic centers?
• Periodic Instanton Bifurcations and Thermal Transition Rate
• Analytic Q-ball solutions and their stability in a piecewise parabolic potential
• Gravitational waves from Affleck-Dine condensate fragmentation
• Collapse of a Bose Condensate with Attractive Interactions
• Semiclassical description of soliton-antisoliton pair production in particle collisions
• Q-ball dark matter and baryogenesis in high-scale inflation

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