In this article we begin by reviewing the (Fang-)Fronsdal construction and the nonlocal geometric equations with unconstrained gauge fields and parameters built by Francia and the senior author from the higher-spin curvatures of de Wit and Freedman. We then turn to the triplet structure of totally symmetric tensors that emerges from free String Field Theory in the α′ → 0 limit and to its generalization to (A)dS backgrounds, and conclude with a discussion of a simple local compensator form of the field equations that displays the unconstrained gauge symmetry of the non-local equations.
|Titolo:||An introduction to free higher-spin fields (TOPCITE: 130 citazioni su SPIRES HEP)|
|Data di pubblicazione:||2004|
|Appare nelle tipologie:||4.1 Contributo in Atti di convegno|