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[itex]G_{\mu \nu} + \Lambda g_{\mu \nu} = \kappa T_{\mu \nu}[/itex]

I understand that some physicists think that the cosmological constant, rather than being a free parameter, might instead be an effect of quantum field theory. Does that mean that mean that they are really moving the term to the other side of this equation:

[itex]G_{\mu \nu} = - \Lambda g_{\mu \nu} + \kappa T_{\mu \nu} \equiv \kappa (T^{vac}_{\mu \nu} + T_{\mu \nu})[/itex] where [itex]T^{vac}[/itex] is some vacuum energy?