# Evolution operators for linearly polarized two-Killing cosmological models

@article{JFernandoBarbero2006EvolutionOF, title={Evolution operators for linearly polarized two-Killing cosmological models}, author={G. J.FernandoBarbero and Daniel G'omez Vergel and Eduardo J S Villase{\~n}or}, journal={Physical Review D}, year={2006}, volume={74}, pages={024003} }

We give a general procedure to obtain non perturbative evolution operators in closed form for quantized linearly polarized two-Killing vector reductions of general relativity with a cosmological interpretation. We study the representation of these operators in Fock spaces and discuss in detail the conditions leading to unitary evolutions.

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