Weinberg propagator of a free massive particle with an arbitrary spin from the BFV-BRST path integral
Abstract
Description
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.
31 pages, Latex, version published in Class. Quantum Grav
31 pages, Latex, version published in Class. Quantum Grav