Conserved current correlators of conformal field theories in 2+1 dimensions

Understand

We compute current correlators of the CP^{N-1} field theory in 2+1 dimensions, both at the critical point and in the phase with spontaneously broken SU(N) symmetry.

• Universal constants are obtained to next-to-leading order in the 1/N expansion.
• Implications are noted for quantum critical points of antiferromagnets, and their vicinity.