219 citations · 2.2k across the 94 of their papers we have counts for
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Unitary evolution as a uniqueness criterion
Jeronimo Cortez, Guillermo A. Mena Marugan, Javier Olmedo +1
We briefly review the use of unitary evolution as a uniqueness criterion in the selection of quantum representations, in the context of scalar fields in non-stationary situations.
Singularity avoidance in the hybrid quantization of the Gowdy model
Paula Tarrío, Mikel Fernández-Méndez, Guillermo A. Mena Marugán
One of the most remarkable phenomena in Loop Quantum Cosmology is that, at least for homogeneous cosmological models, the Big Bang is replaced with a Big Bounce that connects our u…
Hybrid quantization of an inflationary model: The flat case
Mikel Fernández-Méndez, Guillermo A. Mena Marugán, Javier Olmedo
We present a complete quantization of an approximately homogeneous and isotropic universe with small scalar perturbations. We consider the case in which the matter content is a min…
Approximation methods in Loop Quantum Cosmology: From Gowdy cosmologies to inhomogeneous models in Friedmann-Robertson-Walker geometries
Mercedes Martín-Benito, Daniel Martín-de Blas, Guillermo A. Mena Marugán
We develop approximation methods in the hybrid quantization of the Gowdy model with linear polarization and a massless scalar field, for the case of three-torus spatial topology. T…
Massless scalar field in de Sitter spacetime: unitary quantum time evolution
Jeronimo Cortez, Daniel Martin-de Blas, Guillermo A. Mena Marugan +1
We prove that, under the standard conformal scaling, a massless field in de Sitter spacetime admits an O(4)-invariant Fock quantization such that time evolution is unitarily implem…