A SUPERVERSION OF QUASI-FREE 2ND QUANTIZATION .1. CHARGED-PARTICLES

A formalism comprising and extending quasifree second quantization of charged bosons and fermions is presented. The second quantization of one-particle observables leads to current superalgebras, and a super-Schwinger term shows up. Anticommuting parameters are introduced in order to construct super-Bogoliubov transformations mixing bosons and fermions. As an application, representations of Lie superalgebras are given which are semidirect products of extensions of affine Kac-Moody algebras and the Virasoro algebra, and of the super-Virasoro algebra.