UV constraints on massive spinning particles: lessons from the gravitino
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DOI: 10.1007/jhep02(2020)185
Abstract: Self-interacting massive particles with spin ≥ 1 unavoidably violate unitarity; the question is at what scale. For spin-1 the strong coupling scale (at which perturbative unitarity is lost) cannot be raised by any finite tuning… read more here.
Keywords: constraints massive; strong coupling; spin; massive spinning ... See more keywords
Natural selection rules: new positivity bounds for massive spinning particles
Sign Up to like & getrecommendations! Published in 2022 at "Journal of High Energy Physics"
DOI: 10.1007/jhep02(2022)167
Abstract: Abstract We derive new effective field theory (EFT) positivity bounds on the elastic 2 → 2 scattering amplitudes of massive spinning particles from the standard UV properties of unitarity, causality, locality and Lorentz invariance. By… read more here.
Keywords: massive spinning; positivity; spinning particles; natural selection ... See more keywords
World Sheet of a Massive Spinning Particle in d = 4 Minkowski Space
Sign Up to like & getrecommendations! Published in 2019 at "Russian Physics Journal"
DOI: 10.1007/s11182-019-01650-x
Abstract: A geometrical model of a massive spinning particle, whose quantization corresponds to the unitary irreducible representation of the Poincaré group, is considered. It is shown that the class of gauge-equivalent trajectories of the particle forms… read more here.
Keywords: particle; minkowski space; spinning particle; massive spinning ... See more keywords