Gradient Terms in the ScalarDensityChargeDensity Commutator
Abstract
We compute, in the perturbative model of Johnson and Low, the onemesontovacuum matrix element of the equaltime commutator of the charge density of a vector current and a scalar density. A gradient term is found. Consequences of this result for the dimensionality of the current components are discussed.
 Publication:

Physical Review D
 Pub Date:
 August 1971
 DOI:
 10.1103/PhysRevD.4.1072
 Bibcode:
 1971PhRvD...4.1072Z