AN ALTERNATIVE APPROACH FOR DERIVING A POSITIVE P-REPRESENTATION

Using the technique of integration within an ordered product of operat ors and adopting similar procedures as for the theory for quantizing a gauge field, we derive the Drummond-Gardiner positive P-representatio n directly from the Glauber-Sudarshan P-representation. The analogy be tween the extra phase-space dimensions in the positive P-representatio n and the gauge transformation freedoms for gauge field quantization i s pointed out. (C) 1998 Elsevier Science B.V.