RPA and second quantization



Hi CCL'ers,
 I'm currently studying polarization propagator techniques like RPA and MBGF.
 Does anyone know to what the following names are related to:
 Random Phase and Second Quantization. I know more or less what it is about,
 but I don't seem to find the connection between the theory and the name it
 is given to.
 I would appreciate all helpful hints.
 Thanks in advance,
 S. Kwasniewski
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 			Sergiusz Kwasniewski
 			LUC SBG/TS
 			Universitaire Campus Gebouw D
 			3590 Diepenbeek
 			BELGIUM
 			tel(direct): 011/268315
 			fax	   : 011/268301
 			email      : sergiusz.kwasniewski -x- at -x- luc.ac.be
 		     _________________________________________________