Numerical study of surface integral formulations for homogeneous bodies

Several surface integral formulations for electromagnetic interactions with homogeneous material bodies are studied numerically. Included are the well-known Muller and PMCHWT formulations and two previously unreported formulations. One of the two formulations introduced gives a simple form of the Neumann series for low-contrast material bodies. The integral formulations are discretized to matrix equations using the method of moments. The condition numbers of the matrices are evaluated using several definitions of norms. The number of iterations in the CG method is also presented for each formulation.