Spinning Q-balls in the complex signum-Gordon model

Abstract

Rotational excitations of compact Q-balls in the complex signum-Gordon model in 2+1 dimensions are investigated. We find that almost all such spinning Q-balls have the form of a ring of strictly finite width. In the limit of large angular momentum M_z their energy is proportional to |M_z|^(1/5).

10 pages

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• On peakons and Q-balls in the baby Skyrme model
• Strictly finite range forces from the signum-Gordon field: exact results in two spatial dimensions
• Understanding the Quantized Angular Momentum of Rotating Q-balls
• Non-topological Domain Walls in a Model with Broken Supersymmetry