Quantum corrected Q-ball dynamics

Xie, Qi-Xin; Saffin, Paul M.; Tranberg, Anders; Zhou, Shuang-Yong

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.

Citation

Xie, Q.-X., Saffin, P. M., Tranberg, A., & Zhou, S.-Y. (2024). Quantum corrected Q-ball dynamics. Journal of High Energy Physics, 2024(1), Article 165. https://doi.org/10.1007/jhep01%282024%29165

• Journal Article Type: Article
• Acceptance Date: Jan 11, 2024
• Online Publication Date: Jan 26, 2024
• Publication Date: Jan 26, 2024
• Deposit Date: Jan 29, 2024
• Publicly Available Date: Jan 29, 2024
• Journal: Journal of High Energy Physics
• Electronic ISSN: 1029-8479
• Publisher: Springer Verlag
• Peer Reviewed: Peer Reviewed
• Volume: 2024
• Issue: 1
• Article Number: 165
• DOI: https://doi.org/10.1007/jhep01%282024%29165
• Keywords: Lattice Quantum Field Theory, Nonperturbative Effects, Solitons Monopoles and Instantons
• Public URL: https://nottingham-repository.worktribe.com/output/30411684
• Publisher URL: https://link.springer.com/article/10.1007/JHEP01(2024)165
• Additional Information: Received: 8 December 2023; Accepted: 11 January 2024; First Online: 26 January 2024