6.5. FIELD THEORY OF MULTI-PARTICLE SYSTEMS 393
The equations (6.5.66)-(6.5.68) need to be complemented with some gauge fixing equa-
tions; see Remark6.29.
The equations (6.5.66)-(6.5.68) need to be complemented with some gauge fixing equa-
tions; see Remark6.29.