%0 Journal Article %T Weinberg propagator of a free massive particle with an arbitrary spin from the BFV-BRST path integral %A V. G. Zima %A S. O. Fedoruk %J Physics %D 1998 %I arXiv %R 10.1088/0264-9381/16/11/312 %X The transition amplitude is obtained for a free massive particle of arbitrary spin by calculating the path integral in the index-spinor formulation within the BFV-BRST approach. None renormalizations of the path integral measure were applied. The calculation has given the Weinberg propagator written in the index-free form with the use of index spinor. The choice of boundary conditions on the index spinor determines holomorphic or antiholomorphic representation for the canonical description of particle/antiparticle spin. %U http://arxiv.org/abs/hep-th/9807192v3