Higher Spins and Current Exchanges

Abstract

The simplest higher-spin interactions involve classical external currents and symmetric tensors $ϕ_{\m_1 ... \m_s}$, and convey three instructive lessons. The first is a general form of the van Dam-Veltman-Zakharov discontinuity in flat space for this class of fields. The second is the rationale for its disappearance in (A)dS spaces. Finally, the third is a glimpse into an option which is commonly overlooked in Field Theory, and which both higher spins and String Theory are confronting us with: one can well allow in the Lagrangians non-local terms that do not spoil the local nature of physical quantities.

7 pages, LATEX. Lecture presented at the 9th Hellenic School on Elementary Particle Physics and Gravity, Corfu 2009

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Cited by in corpus (5)

• Towards metric-like higher-spin gauge theories in three dimensions
• Higher-spin massless S-matrices in four-dimensions
• Radial Reduction and Cubic Interaction for Higher Spins in (A)dS space
• Gauge invariant and gauge fixed actions for various higher-spin fields from string field theory
• Higher Spins in D=2+1