S-matrix bootstrap for effective field theories: massless pions

Andrea Guerrieri (Instituto de Física Téorica, UNESP, ICTP South American Institute for Fundamental Research, Rua Dr. Bento Teobaldo Ferraz 271, São Paulo, 01140-070, Brazil; School of Physics and Astronomy, Tel Aviv University, Ramat Aviv, Tel Aviv, 69978, Israel) ; João Penedones (Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), Rte de la Sorge, BSP 728, Lausanne, CH-1015, Switzerland) ; Pedro Vieira (Instituto de Física Téorica, UNESP, ICTP South American Institute for Fundamental Research, Rua Dr. Bento Teobaldo Ferraz 271, São Paulo, 01140-070, Brazil; Perimeter Institute for Theoretical Physics, 31 Caroline St N, Waterloo, ON, N2L 2Y5, Canada)

We use the numerical S-matrix bootstrap method to obtain bounds on the two leading Wilson coefficients (or low energy constants) of the chiral lagrangian controlling the low-energy dynamics of massless pions. This provides a proof of concept that the numerical S-matrix bootstrap can be used to derive non-perturbative bounds on massless EFTs in more than two spacetime dimensions.

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      "surname": "Vieira", 
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Published on:
14 June 2021
Publisher:
Springer
Published in:
Journal of High Energy Physics , Volume 2021 (2021)
Issue 6
Pages 1-26
DOI:
https://doi.org/10.1007/JHEP06(2021)088
arXiv:
2011.02802
Copyrights:
The Author(s)
Licence:
CC-BY-4.0

Fulltext files: