Quantization of systems with $OSp(2|2)$ symmetry

Abstract

We study the quantization of systems that contain both ordinary fields with a positive norm and their counterparts obeying different statistics. The systems have novel fermionic symmetries different from the space-time supersymmetry and the BRST symmetry. The unitarity of systems holds by imposing subsidiary conditions on states.

Comments: 14 pages, some explanations added and typos corrected