Photons from dark photon solitons via parametric resonance

Wave-like dark matter made of spin-1 particles (dark photons) is expected to form ground state clumps called vector solitons, which can have different polarizations. In this work, we consider the interaction of dark photons with photons, expressed as dimension-6 operators, and study the electromagnetic radiation that arises from an isolated vector soliton due to parametric resonant amplification of the ambient electromagnetic field. We characterize the directional dependence and polarization of the outgoing radiation, which depends on the operator as well as the polarization state of the underlying vector soliton. We discuss the implications of this radiation for the stability of solitons and as a possible channel for detecting mergers of vector solitons through astrophysical observations.

Automated summary

In this research, the interaction between dark photons and photons is considered, and the electromagnetic radiation generated from an isolated vector soliton due to resonant amplification of the ambient electromagnetic field is studied. The directional dependence and polarization of the outgoing radiation are characterized, which depend on the operator and the polarization state of the underlying vector soliton.