39 citations · 176 across the 15 of their papers we have counts for
15 papers
Non-oscillating vacuum states and the quantum homogeneity and isotropy hypothesis in Loop Quantum Cosmology
Beatriz Elizaga Navascués, Guillermo A. Mena Marugán, Santiago Prado
We study the compatibility of the quantum homogeneitiy and isotropy hypothesis (QHIH), proposed by Ashtekar and Gupt to restrict the choice of vacuum state for the cosmological per…
Uniqueness Criteria for the Fock Quantization of Dirac Fields and Applications in Hybrid Loop Quantum Cosmology
Jerónimo Cortez, Beatriz Elizaga Navascués, Guillermo A. Mena Marugán +2
In generic curved spacetimes, the unavailability of a natural choice of vacuum state introduces a serious ambiguity in the Fock quantization of fields. In this review, we study the…
Unique fermionic vacuum in de Sitter spacetime from hybrid quantum cosmology
Beatriz Elizaga Navascués, Guillermo A. Mena Marugán, Santiago Prado
In this work we show how the criterion of asymptotic Hamiltonian diagonalization originated in hybrid quantum cosmology serves to pick out a unique vacuum for the Dirac field in de…
Asymptotic diagonalization of the fermionic Hamiltonian in hybrid loop quantum cosmology
Beatriz Elizaga Navascués, Guillermo A. Mena Marugán, Santiago Prado
We use the freedom available in hybrid loop quantum cosmology to split the degrees of freedom between the geometry and the matter fields so as to build a quantum field theory for t…
The Vacuum State of Primordial Fluctuations in Hybrid Loop Quantum Cosmology
Beatriz Elizaga Navascués, Daniel Martín de Blas, Guillermo A. Mena Marugán
We investigate the role played by the vacuum of the primordial fluctuations in hybrid Loop Quantum Cosmology. We consider scenarios where the inflaton potential is a mass term and…
Perturbations in Quantum Cosmology: The Continuum Limit in Fourier Space
Beatriz Elizaga Navascués, Guillermo A. Mena Marugán
We analyze the passage to a continuum limit of the mode spectrum of primordial perturbations around flat cosmological spacetimes in Quantum Cosmology, showing that this limit can b…