Crossing Symmetric Spinning S-matrix Bootstrap: EFT bounds

Understand

We develop crossing symmetric dispersion relations for describing 2-2 scattering of identical external particles carrying spin.

• This enables us to import techniques from Geometric Function Theory and study two sided bounds on low energy Wilson coefficients.
• We consider scattering of photons, gravitons in weakly coupled effective field theories.
• We provide general expressions for the locality/null constraints.