Massive Higher Spins: Effective Theory and Consistency
High Energy Physics - Theory
2020-01-08 v2 High Energy Physics - Phenomenology
Abstract
We construct the effective field theory for a single massive higher-spin particle in flat spacetime. Positivity bounds of the S-matrix force the cutoff of the theory to be well below the naive strong-coupling scale, forbid any potential and make therefore higher-derivative operators important even at low energy. As interesting application, we discuss in detail the massive spin-3 theory and show that an extended Galileon-like symmetry of the longitudinal modes, even with spin, emerges at high energy.
Cite
@article{arxiv.1903.08664,
title = {Massive Higher Spins: Effective Theory and Consistency},
author = {Brando Bellazzini and Francesco Riva and Javi Serra and Francesco Sgarlata},
journal= {arXiv preprint arXiv:1903.08664},
year = {2020}
}
Comments
22 pages, 2 figures and 2 appendices; v2 improved discussion, extra appendix and references added