nLab
central charge

Contents

Idea

In physics, Noether's theorem relates symmetries to conserved currents and charges. Give a symmetry Lie algebra or Lie group, and given a central extension of this, then the generators of the central extension are accordinly called central charges.

Examples

Revised on September 13, 2013 11:55:14 by Urs Schreiber (82.169.114.243)