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arXiv · 2312.01139

Quantum corrected Q-ball dynamics

Qi-Xin Xie·Paul M. Saffin·Anders Tranberg·Shuang-Yong Zhou
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Abstract

The physics of individual Q-balls and interactions between multiple Q-balls are well-studied in classical numerical simulations. Interesting properties and phenomena have been discovered, involving stability, forces, collisions and swapping of charge between different components of multi-Q-ball systems. We investigate these phenomena in quantum field theory, including quantum corrections to leading order in a 2PI coupling expansion, the inhomogeneous Hartree approximation. The presence of quantum modes and new decay channels allows the mean-field Q-ball to exchange charge with the quantum modes, and also alters the charge swapping frequencies of the composite Q-balls. It is also observed that the periodic exchanges between the mean-field and quantum modes tend to be quenched by collisions between Q-balls. We illustrate how the classical limit arises through a scaling of the Q-ball potential, making quantum corrections negligible for large-amplitude Q-balls.

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Qi-Xin Xie, Paul M. Saffin, Anders Tranberg, Shuang-Yong Zhou. 2023-12-02. Quantum corrected Q-ball dynamics. https://arxiv.org/abs/2312.01139

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