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SCALAR PERTURBATIONS IN SCALAR FIELD QUANTUM COSMOLOGY

    https://doi.org/10.1142/9789814374552_0243Cited by:0 (Source: Crossref)
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    Abstract:

    We shall show how to obtain the simplest equations for the Mukhanov-Sasaki variable describing quantum linear scalar perturbations in the case of scalar fields without potential term. This was done through the implementation of canonical transformations at the classical level, and unitary transformations at the quantum level, without ever using any classical background equation.