In one system, these particles occur as poles of a Green’s function that is proportional to a weight symbolized Z-sub-k. Massless examples of these particles occur as excitations in a class (-5[1])of semimetals exemplified by (15[1])tantalum arsenide. (15[1])Interacting examples of these particles form quasiparticles in a model whose 1D (15[1])case (-5[1])breaks down and is named for Luttinger. The expected occupancy of these particles is given by the (15[1])function, “one over one plus (15[1])an exponential,” which is bounded between zero and (*) one. Slater (10[1]-5[1])determinants (-5[1])are used (10[1])to encode the (10[2])anti-symmetry (10[3])property (10[1])of wavefunctions of these (10[1])particles. (10[1]-5[1])Only (10[1]-5[1])one of these (-5[2])particles (10[1])can occupy (10[1])a given quantum (10[2]-5[1])state (10[1]-5[2])at (10[1])a time (-5[1])due (10[1])to (-5[1])the Pauli (-5[1])exclusion principle. (-5[1])For (10[1])10 points, name these (10[1]0[1]-5[1])particles with half-integer (10[1])spins, (10[1])which are contrasted with (-5[1])bosons. (10[1])■END■ (10[4]0[2])