The $1/N$ expansion in the two-dimensional supersymmetric $O(N)\times O(K)$-invariant $O(N)/O(N-K)$ model and dynamical generation of massive vector particles

In the framework of the $1/N$ expansion the supersymmetric $O(N)\times O(K)$-invariant $O(N)/O(N-K)$ model is investigated. It is shown that in the leading order in $1/N$ massive supermultiplets of fields that may also include vector fields are dynamically generated.