Observational effects from quantum cosmology

Abstract

The status of quantum cosmologies as testable models of the early universe is assessed in the context of inflation. While traditional Wheeler-DeWitt quantization is unable to produce sizable effects in the cosmic microwave background, the more recent loop quantum cosmology can generate potentially detectable departures from the standard cosmic spectrum. Thus, present observations constrain the parameter space of the model, which could be made falsifiable by near-future experiments.

16 pages, 3 figures. Invited review article also containing original material. v2: new section on holonomy corrections, introduction extended, references added, typos corrected; v3: includes corrections of eqs. (3), (62) and (64c) of the erratum

References in corpus (24)

• Improved Cosmological Constraints from New, Old and Combined Supernova Datasets
• Quantum Nature of the Big Bang: Improved dynamics
• Anomaly freedom in perturbative loop quantum gravity
• Loop quantum gravity corrections to gravitational wave dispersion
• Hybrid quantization of an inflationary universe
• Consistency of holonomy-corrected scalar, vector and tensor perturbations in Loop Quantum Cosmology
• Quantum field theory on a cosmological, quantum space-time
• Loop quantum cosmology and inhomogeneities
• Large scale effective theory for cosmological bounces
• Gauge invariant cosmological perturbation equations with corrections from loop quantum gravity
• Cosmological footprints of loop quantum gravity
• Super-inflation in Loop Quantum Cosmology
• Observational constraints on patch inflation in noncommutative spacetime
• Cosmological vector modes and quantum gravity effects
• The gravitational wave background from super-inflation in Loop Quantum Cosmology
• Asymptotic Safety, Fractals, and Cosmology
• Inflationary observables in loop quantum cosmology
• Observing the Big Bounce with Tensor Modes in the Cosmic Microwave Background: Phenomenology and Fundamental LQC Parameters
• Lattice loop quantum cosmology: scalar perturbations
• Inflationary scalar spectrum in loop quantum cosmology
• Can effects of quantum gravity be observed in the cosmic microwave background?
• The high-density regime of kinetic-dominated loop quantum cosmology
• A no-singularity scenario in loop quantum gravity
• Quantum Geometry and its Implications for Black Holes

Cited by in corpus (30)

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• Quantum-gravitational effects on gauge-invariant scalar and tensor perturbations during inflation: The slow-roll approximation
• Hybrid quantization of an inflationary model: The flat case
• Duration of inflation and conditions at the bounce as a prediction of effective isotropic loop quantum cosmolog
• Comparison of primordial tensor power spectra from the deformed algebra and dressed metric approaches in loop quantum cosmology
• Quantum-gravitational effects on gauge-invariant scalar and tensor perturbations during inflation: The de Sitter case
• Primordial scalar power spectrum from the Euclidean Big Bounce
• Observational Exclusion of a Consistent Quantum Cosmology Scenario
• Signatures of Quantum Gravity in a Born-Oppenheimer Context
• Detailed investigation of the duration of inflation in loop quantum cosmology for a Bianchi-I universe with different inflaton potentials and initial conditions
• Primordial power spectrum from the Dapor-Liegener model of loop quantum cosmology
• Non-Gaussianity in Loop Quantum Cosmology
• Consistent Scalar and Tensor Perturbation Power Spectra in Single Fluid Matter Bounce with Dark Energy Era
• The Born-Oppenheimer Method, Quantum Gravity and Matter
• Quantum Cosmology and the Evolution of Inflationary Spectra
• Exhaustive investigation of the duration of inflation in effective anisotropic loop quantum cosmology
• Quantum Gravity and the Large Scale Anomaly
• Loop Quantum Cosmology
• Quantum Gravity, Time, Bounces and Matter
• Modified Friedmann equation and survey of solutions in effective Bianchi-I loop quantum cosmology
• Uniqueness of the Fock quantization of scalar fields and processes with signature change in cosmology
• Our Universe from the cosmological constant
• Quantum gravity phenomenology at the dawn of the multi-messenger era -- A review
• Quantum reduced loop gravity: extension to scalar field
• Perturbative evaluation of scalar two-point function in the cosmic microwave background power spectrum
• Note on the super inflation in loop quantum cosmology
• (Loop) quantum gravity and the inflationary scenario