Connecting the elementary constituents of matter with the carriers of the fundamental forces, this concept relates transformations in spin to transformations in space-time.  
It eliminates infinite quantities appearing in calculations of particle interactions at high energies by postulating undiscovered particles such as squarks, photinos, and gluinos. Connecting the elementary constituents of matter with the carriers of the fundamental forces, this concept relates transformations in spin to transformations in space-time.  FTP, name this concept relating fermions and bosons.
It eliminates infinite quantities appearing in calculations of particle interactions at high energies by postulating undiscovered particles such as squarks, photinos, and gluinos.
supersymmetry (or susy)