Extension of positivity bounds to non-local theories: IR obstructions to Lorentz invariant UV completions
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DOI: 10.1007/jhep05(2019)216
Abstract: A bstractWe derive positivity bounds on low energy effective field theories which admit gapped, analytic, unitary, Lorentz invariant, and possibly non-local UV completions, by considering 2 to 2 scatterings of Jaffe fields whose Lehmann-Källén spectral… read more here.
Keywords: non local; invariant completions; extension positivity; lorentz invariant ... See more keywords