Seminarium Teorii Względności i Grawitacji

Recent developments in the so called midisuperspace approach to loop quantum gravity/cosmology, involving in particular the abelianization of the constraint algebra, has given high hopes for probing the genuine quantum dynamics at least in some scenarios in (nonlinear inhomogeneous) cosmology and black holes/matter collapse. Focusing on the application of this procedure to the cosmological model of a Gowdy universe with local rotational symmetry I am going to discuss the method's strengths and weaknesses. In particular I will focus on the issue of reproducing the General Relativity as the low energy limit of this model.