Stability of explicit schemes for solving Maxwell's equations by high-order finite volume methods

A new stability criterion of explicit schemes for solving Maxwell's equations by high-order finite volume methods is proposed. The proof is based on a generalization of the stability criterion for the first-order finite volume scheme to the case of high-order schemes. The effect of discontinuities of the solution on the stability of high-order schemes is evaluated. The maximum principle for the finite volume approximations of vector conservation laws is discussed.