219 citations · 2.2k across the 94 of their papers we have counts for
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Computing the graph-changing dynamics of loop quantum gravity
Thiago L. M. Guedes, Guillermo A. Mena Marugán, Francesca Vidotto +1
In loop quantum gravity (LQG), states of the gravitational field are represented by labeled graphs called spin networks. Their dynamics can be described by a Hamiltonian constraint…
Choice of vacuum state and the relation between inflationary and Planck scales
Maciej Kowalczyk, Guillermo A. Mena Marugán
Recent observations about the cosmic microwave background evidence a clear discrepancy between the scale of inflation and the Planck scale expected in the conventional inflationary…
Comparing Analytic and Numerical Studies of Tensor Perturbations in Loop Quantum Cosmology
Guillermo A. Mena Marugán, Antonio Vicente-Becerril, Jesús Yébana Carrilero
We investigate the implications of different quantization approaches in Loop Quantum Cosmology for the primordial power spectrum of tensor modes. Specifically, we consider the hybr…
Analytic and Numerical Study of Scalar Perturbations in Loop Quantum Cosmology
Guillermo A. Mena Marugán, Antonio Vicente-Becerril, Jesús Yébana Carrilero
The possibility that quantum geometry effects may alleviate the apparent tensions existing at large angular scales in the observations of the Cosmic Microwave Background explains t…
Time-dependent scalings and Fock quantization of a massless scalar field in Kantowski-Sachs
Jerónimo Cortez, Guillermo A. Mena Marugán, Alvaro Torres-Caballeros +1
We address the issue of inequivalent Fock representations in Quantum Field Theory in a curved homogenous and anisotropic background, namely Kantowski-Sachs spacetime. A family of u…
Axial perturbations in Kantowski-Sachs spacetimes and hybrid quantum cosmology
Guillermo A. Mena Marugán, Andrés Mínguez-Sánchez
Recently, there has been a growing interest in investigating homogeneous but anisotropic spacetimes owing to their relation with nonrotating, uncharged black hole interiors. We pre…