Positivity Constraints on Interacting Pseudo-Linear Spin-2 Fields
arXiv:1912.10018 · doi:10.1007/JHEP07(2020)121
Abstract
We explore the effective field theory for single and multiple interacting pseudo-linear spin-2 fields. By applying forward limit positivity bounds, we show that among the parameters contributing to elastic tree level scattering amplitude, there is no region of compatibility of the leading interactions with a standard local UV completion. Our result generalizes to any number of interacting pseudo-linear spin-2 fields. These results have significant implications for the organization of the effective field theory expansion for pseudo-linear fields.
arXiv comment18 pages
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