# Q-ball dynamics from atomic Bose?Einstein condensates

@article{Enqvist2003QballDF, title={Q-ball dynamics from atomic Bose?Einstein condensates}, author={Kari Enqvist and Mikko Laine}, journal={Journal of Cosmology and Astroparticle Physics}, year={2003}, volume={2003}, pages={003-003} }

Relativistic scalar field theories with a conserved global charge Q often possess (meta)stable spherically symmetric soliton solutions, called Q-balls. We elaborate on the perfect formal analogy which exists between Q-balls and spherically symmetric solitons in certain non-relativistic atomic Bose–Einstein condensates, for which the dominant interatomic interaction can be tuned attractive. In a harmonic trap, present in existing experiments, the Q-ball solution is modified in an essential way…

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