Existence of dyons in minimally gauged Skyrme model via constrained minimization

Zhifeng Gao, Yisong Yang

Research output: Contribution to journalArticlepeer-review


We prove the existence of electrically and magnetically charged particle-like static solutions, known as dyons, in the minimally gauged Skyrme model developed by Brihaye, Hartmann, and Tchrakian. The solutions are spherically symmetric, depend on two continuous parameters, and carry unit monopole and magnetic charges but continuous Skyrme charge and non-quantized electric charge induced from the 't Hooft electromagnetism. The problem amounts to obtaining a finite-energy critical point of an indefinite action functional, arising from the presence of electricity and the Minkowski spacetime signature. The difficulty with the absence of the Higgs field is overcome by achieving suitable strong convergence and obtaining uniform decay estimates at singular boundary points so that the negative sector of the action functional becomes tractable.

Original languageEnglish (US)
Pages (from-to)3602-3625
Number of pages24
JournalJournal of Functional Analysis
Issue number8
StatePublished - Apr 15 2012


  • Calculus of variations for indefinite action functional
  • Constraints
  • Dyons
  • Electromagnetism
  • Gauge fields
  • Monopoles
  • Skyrme model
  • Topological invariants
  • Weak convergence

ASJC Scopus subject areas

  • Analysis


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