Primordial perturbations in the Dapor-Liegener model of hybrid loop quantum cosmology
arXiv:2002.01262 · doi:10.1103/PhysRevD.102.083524
Abstract
In this work, we extend the formalism of hybrid loop quantum cosmology for primordial perturbations around a flat, homogeneous, and isotropic universe to the new treatment of Friedmann-Lemaître-Robertson-Walker geometries proposed recently by Dapor and Liegener, based on an alternative regularization of the Hamiltonian constraint. In fact, our discussion is applicable also to other possible regularization schemes for loop quantum cosmology, although we specialize our analysis to the Dapor-Liegener proposal and construct explicitly all involved quantum operators for that case.
arXiv comment17 pages, updated to include the modifications resulting from the peer-review process
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- Hybrid Loop Quantum Cosmology: An Overview
- Primordial scalar power spectrum from the hybrid approach in loop cosmologies
- Phenomenological implications of modified loop cosmologies: an overview
- Loop quantum cosmology: relation between theory and observations
- The time-dependent mass of cosmological perturbations in loop quantum cosmology: Dapor-Liegener regularization
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