Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2006-01-30
Phys.Rev.D73:105014,2006
Physics
High Energy Physics
High Energy Physics - Theory
24 pages
Scientific paper
10.1103/PhysRevD.73.105014
We consider massless higher spin gauge theories with both electric and magnetic sources, with a special emphasis on the spin two case. We write the equations of motion at the linear level (with conserved external sources) and introduce Dirac strings so as to derive the equations from a variational principle. We then derive a quantization condition that generalizes the familiar Dirac quantization condition, and which involves the conserved charges associated with the asymptotic symmetries for higher spins. Next we discuss briefly how the result extends to the non linear theory. This is done in the context of gravitation, where the Taub-NUT solution provides the exact solution of the field equations with both types of sources. We rederive, in analogy with electromagnetism, the quantization condition from the quantization of the angular momentum. We also observe that the Taub-NUT metric is asymptotically flat at spatial infinity in the sense of Regge and Teitelboim (including their parity conditions). It follows, in particular, that one can consistently consider in the variational principle configurations with different electric and magnetic masses.
Bunster Claudio
Cnockaert Sandrine
Henneaux Marc
Portugues Ruben
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