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arXiv · 1902.06754

Constructing effective field theories via their harmonics

Brian Henning·Tom Melia
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Abstract

We consider the construction of operator bases for massless, relativistic quantum field theories, and show this is equivalent to obtaining the harmonic modes of a physical manifold (the kinematic Grassmannian), upon which observables have support. This enables us to recast the approach of effective field theory (EFT) through the lens of harmonic analysis. We explicitly construct harmonics corresponding to low mass dimension EFT operators.

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Brian Henning, Tom Melia. 2019-02-18. Constructing effective field theories via their harmonics. https://doi.org/10.1103/physrevd.100.016015

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