Gauge Invariant Lagrangians for Free and Interacting Higher Spin Fields. A Review of the BRST formulation

Abstract

We give a detailed review of the construction of gauge invariant Lagrangians for free and interacting higher spin fields using the BRST approach developed over the past few years.

Extended version of the contribution to the volume dedicated to the 60th birthday of Prof I.L. Buchbinder; 58 pages. v2 References added, some typos fixed, a couple of clarifications added. v3 To appear in International journal of Modern Physics A (pubished version), some typos fixed, references added