Journal of High Energy Physics

, 2019:12 | Cite as

Reparameterization invariant operator basis for NRQED and HQET

  • Andrew Kobach
  • Sridip PalEmail author
Open Access
Regular Article - Theoretical Physics


We provide a self-contained discussion of how reparameterization invariance connects a rotationally-invariant heavy particle effective theory with a single heavy fermion to a Lorentz-invariant theory. Furthermore, using Hilbert-series methods, a Lorentz- invariant operator basis is tabulated, up to and including operators of order 1/M4, when the fermion couples to an external U(1) or SU(3) gauge interaction.


Effective Field Theories Heavy Quark Physics Conformal Field Theory 


Open Access

This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited


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Copyright information

© The Author(s) 2019

Authors and Affiliations

  1. 1.Theoretical Division, Los Alamos National LaboratoryLos AlamosU.S.A.
  2. 2.Physics DepartmentUniversity of CaliforniaSan DiegoU.S.A.

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