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Strong coupling and the Goldstone Equivalence theorem for massive higher spins

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If you have a question about this talk, please contact Dr. Carl Turner.

In this talk we will discuss effective field theories of self-interacting massive spinning fields and derive the largest scale at which perturbative unitarity breaks down when allowing for order one tunings in the potential. This scale is a function of the field’s mass and spin and complements similar expressions in the literature for couplings of massive higher spins to photons and gravitons.

We show how the strong coupling scale can be increased when Wess-Zumino structures exist for the non-linearly realised symmetries of the spinning field’s longitudinal mode (which is spin-0 for massive bosons and spin-1/2 for massive fermions). We will provide results for any spin but concentrate on the illustrative cases of spins 1,3/2 and 2.

This talk is part of the Quantum Fields and Strings Seminars series.

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