Radiation of an electric charge in the field of a magnetic monopole Academic Article uri icon


  • We consider the radiation of photons from quarks scattering on color-magnetic monopoles in the quark-gluon plasma. We consider a temperature regime $T\ensuremath{\gtrsim}2{T}_{c}$, where monopoles can be considered as static, rare objects embedded into matter consisting mostly of the usual ``electric'' quasiparticles, quarks and gluons. The calculation is performed in the classical, nonrelativistic approximation and results are compared to photon emission from Coulomb scattering of quarks, known to provide a significant contribution to the photon emission rates from quark-gluon plasma. The present study is a first step towards understanding whether this scattering process can give a sizeable contribution to dilepton production in heavy-ion collisions. Our results are encouraging: by comparing the magnitudes of the photon emission rate for the two processes, we find a dominance in the case of quark-monopole scattering. Our results display strong sensitivity to finite densities of quarks and monopoles.

publication date

  • January 1, 2010