Q-branes

Abstract

Non-topological solitons (Q-balls) are discussed in some stringy settings. Our main result is that the dielectric D-brane system of Myers admits non-abelian Q-ball solutions on their world-volume, in which $N$ D$p$-branes relax to the standard dielectric form outside the Q-ball, but assume a more diffuse configuration at its centre. We also consider how Q-balls behave in the bulk of extra-dimensional theories, or on wrapped branes. We demonstrate that they carry Kaluza-Klein charge and possess a corresponding Kaluza-Klein tower of states just as normal particles, and we discuss surface energy effects by finding exact Q-ball solutions in models with a specific logarithmic potential.

19 pages

References in corpus (6)

• Dark Matter Triggers of Supernovae
• Q-balls, Integrability and Duality
• Charged Q-balls and boson stars and dynamics of charged test particles
• Vortices, Q-balls and Domain Walls on Dielectric M2-branes
• IceCube potential for detecting Q-ball dark matter in gauge mediation
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Cited by in corpus (5)

• Exact solutions, energy and charge of stable Q-balls
• Excited Q-Balls
• Non-topological solitons and quasi-solitons
• The MoEDAL experiment at the LHC: status and results
• Spherical D-brane by Tachyon Condensation