Renormalization of Galilean electrodynamics

Shira Chapman, Lorenzo Di Pietro, Kevin T. Grosvenor, Ziqi Yan

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

We study the quantum properties of a Galilean-invariant abelian gauge theory coupled to a Schrödinger scalar in 2+1 dimensions. At the classical level, the theory with minimal coupling is obtained from a null-reduction of relativistic Maxwell theory coupled to a complex scalar field in 3+1 dimensions and is closely related to the Galilean electromagnetism of Le-Bellac and Lévy-Leblond. Due to the presence of a dimensionless, gauge-invariant scalar field in the Galilean multiplet of the gauge-field, we find that at the quantum level an infinite number of couplings is generated. We explain how to handle the quantum corrections systematically using the background field method. Due to a non-renormalization theorem, the beta function of the gauge coupling is found to vanish to all orders in perturbation theory, leading to a continuous family of fixed points where the non-relativistic conformal symmetry is preserved.

Original languageEnglish
Article number195
JournalJournal of High Energy Physics
Volume2020
Issue number10
DOIs
StatePublished - 1 Oct 2020
Externally publishedYes

Keywords

  • Conformal Field Theory
  • Gauge Symmetry
  • Renormalization Group
  • Space-Time Symmetries

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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