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FIELD Phys:Particle Physics
DATE September 30 (Thu), 2021
TIME 16:00-17:30
PLACE Online
SPEAKER Tevong You
HOST Park, Jae-hyeon
INSTITUTE University of Cambridge & CERN
TITLE New Positivity Bounds on Effective Field Theories
ABSTRACT

Effective field theory (EFT) is a powerful framework and organising principle for characterising phenomena at different energy scales. The effects of heavier ultra-violet (UV) degrees of freedom become encapsulated in the Wilson coefficients of higher-dimensional operators at low energies in the infra-red (IR). Positivity bounds place general constraints on these coefficients using only fundamental properties of the UV theory such as locality, unitarity, and causality. I will review the derivation of these positivity bounds before presenting recent work extending their applicability to the case of EFTs involving massive spinning particles.

https://indico.kias.re.kr/event/61

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