ABSTRACT
It is easy to show that H is skew symmetric, i.e. H 1 = -H, with respect to the inner product (Z(t)]Z'(l)) = fv ZT(l) · Z'(l) dr, where V denotes the system's volume. ln addition to Eq.( I), the EM fields also satisfy \7 · ( JllX( l)) = 0 and \7 · ( vfcY(l)) = 0 [I J. Throughout this paper we use dimensionless quantities: We measure distances in units of A and expresss time and frequency in units of Ajc and c/ A, respectively.
