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arXiv · 1612.00700

Radiative corrections and instability of large Q-Balls

A. V. Kovtun·E. Ya. Nugaev
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Abstract

We discuss stability of Q-balls interacting with fermions in theory with small coupling constant g. We argue that for configurations with large global U(1)-charge Q the problem of classical stability becomes more subtle. For example, in model with flat direction there is maximal value of charge for stable solutions with Q~1/g^4. We study origin of additional instability and discuss possible ways to avoid it.

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A. V. Kovtun, E. Ya. Nugaev. 2017-11-22. Radiative corrections and instability of large Q-Balls. https://doi.org/10.1142/s021773231750198x

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