Gee wiz! I sed something sort of like this about three to six months ago in the Vort Collective. However, I'm sure what I said was stated much more crudely.
I recall conjecturing that the aggregate "mass" existence of all those fleeting virtual particles could possibly in themselves contribute to the over-all dark matter gravity equation. I did NOT however elaborate on the di-pole, positive/negative aspect. (Not my area of expertise! ;-) ) I only conjectured that perhaps a LOT of unexplained "mass" might exist in the midst of all that naught quantum fluctuating going on behind our back. I wonder if I can find that old post of mine... Can I pick up my Nobel Prize now? Regards Steven Vincent Johnson www.OrionWorks.com www.zazzle.com/orionworks