108 citations · 362 across the 7 of their papers we have counts for
7 papers
Hybrid loop quantum cosmology and predictions for the cosmic microwave background
Laura Castelló Gomar, Daniel Martín de Blas, Guillermo A. Mena Marugán +1
We investigate the consequences of the hybrid quantization approach for primordial perturbations in loop quantum cosmology, obtaining predictions for the cosmic microwave backgroun…
Quantum corrections to the Mukhanov-Sasaki equations
Laura Castelló Gomar, Mercedes Martín-Benito, Guillermo A. Mena Marugán
Recently, a lot of attention has been paid to the modifications of the power spectrum of primordial fluctuations caused by quantum cosmology effects. The origin of these modificati…
Gauge-Invariant Perturbations in Hybrid Quantum Cosmology
Laura Castelló Gomar, Mercedes Martín-Benito, Guillermo A. Mena Marugán
We consider cosmological perturbations around homogeneous and isotropic spacetimes minimally coupled to a scalar field and present a formulation which is designed to preserve covar…
Cosmological perturbations in Hybrid Loop Quantum Cosmology: Mukhanov-Sasaki variables
Laura Castelló Gomar, Mikel Fernández-Méndez, Guillermo A. Mena Marugán +1
We study cosmological perturbations in the framework of Loop Quantum Cosmology, using a hybrid quantization approach and Mukhanov-Sasaki variables. The formulation in terms of thes…
Uniqueness of the Fock quantization of scalar fields and processes with signature change in cosmology
Laura Castelló Gomar, Guillermo A. Mena Marugán
We study scalar fields subject to an equation of the Klein-Gordon type in nonstationary spacetimes, such as those found in cosmology, assuming that all the relevant spatial depende…
Unitary evolution and uniqueness of the Fock quantization in flat cosmologies with compact spatial sections
Laura Castelló Gomar, Jerónimo Cortez, Daniel Martín-de Blas +2
We study the Fock quantization of scalar fields with a time dependent mass in cosmological scenarios with flat compact spatial sections. This framework describes physically interes…
Uniqueness of the Fock quantization of scalar fields in spatially flat cosmological spacetimes
Laura Castelló Gomar, Jerónimo Cortez, Daniel Martín-de Blas +2
We study the Fock quantization of scalar fields in (generically) time dependent scenarios, focusing on the case in which the field propagation occurs in --either a background or ef…