Corpus ID: 231951587

Sharp Boundaries for the Swampland

@inproceedings{CaronHuot2021SharpBF,
  title={Sharp Boundaries for the Swampland},
  author={S. Caron-Huot and D. Maz{\'a}{\vc} and L. Rastelli and D. Simmons-Duffin},
  year={2021}
}
We reconsider the problem of bounding higher derivative couplings in consistent weakly coupled gravitational theories, starting from general assumptions about analyticity and Regge growth of the S-matrix. Higher derivative couplings are expected to be of order one in the units of the UV cutoff. Our approach justifies this expectation and allows to prove precise bounds on the order one coefficients. Our main tool are dispersive sum rules for the Smatrix. We overcome the difficulties presented by… Expand

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