Published 2019 | Version v1
Journal article

Harmonic analysis and mean field theory

  • 1. Institute of Physics (EPFL), Lausanne (Switzerland)
  • 2. Institute for Advanced Study, Princeton, NJ (United States)
  • 3. California Institute of Technology (CalTech), Pasadena, CA (United States)

Description

We review some aspects of harmonic analysis for the Euclidean conformal group, including conformally-invariant pairings, the Plancherel measure, and the shadow transform. We introduce two efficient methods for computing these quantities: one based on weight-shifting operators, and another based on Fourier space. As an application, we give a general formula for OPE coefficients in Mean Field Theory (MFT) for arbitrary spinning operators. We apply this formula to several examples, including MFT for fermions and "seed" operators in 4d, and MFT for currents and stress-tensors in 3d.

Availability note (English)

Available from https://www.osti.gov/servlets/purl/1594253; https://www.osti.gov/biblio/1594253; DOE Accepted Manuscript full text, or the publishers Best Available Version will be available free of charge after the embargo period

Additional details

Publishing Information

Journal Title
Journal of High Energy Physics (Online)
Journal Volume
2019
Journal Issue
10
Journal Page Range
vp.
ISSN
1029-8479