Quantum gravity and gravitational-wave astronomy
arXiv:2012.08251 · doi:10.1007/978-981-15-4702-7_30-1
Abstract
We review the present status of quantum-gravity phenomenology in relation to gravitational waves (GWs). The topic can be approached from two direction, a model-dependent one and a model-independent one. In the first case, we introduce some among the most prominent cosmological models embedded in theories of quantum gravity, while in the second case we point out certain common features one finds in quantum gravity. Three cosmological GW observables can be affected by perturbative as well as non-perturbative quantum-gravity effects: the stochastic GW background, the propagation speed of GWs and the luminosity distance of GW sources. While many quantum-gravity models do not give rise to any observable signal, some predict a blue-tilted stochastic background or a modified luminosity distance, both detectable by future GW interferometers. We conclude that it is difficult, but still possible, to test quantum gravity with GW observations.
29 pages, 3 figures, 1 table. Invited chapter for C. Bambi, S. Katsanevas and K.D. Kokkotas (eds.), "Handbook of Gravitational Wave Astronomy" (Springer, Singapore, 2021). Part of the text has been adapted from arXiv:1904.00384, 1907.02489 and 2012.00170. v2: minor corrections. arXiv admin note: text overlap with arXiv:2012.00170
References in corpus (25)
- Gravitational Waves and Gamma-rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A
- Quantum Gravity at a Lifshitz Point
- Spectral Dimension of the Universe in Quantum Gravity at a Lifshitz Point
- GW190412: Observation of a Binary-Black-Hole Coalescence with Asymmetric Masses
- Science with the space-based interferometer LISA. IV: Probing inflation with gravitational waves
- Nonperturbative Quantum Gravity
- Fractal properties of quantum spacetime
- Dimension and Dimensional Reduction in Quantum Gravity
- Blue-tilted Tensor Spectrum and Thermal History of the Universe
- Beyond Concordance Cosmology with Magnification of Gravitational-Wave Standard Sirens
- Quantum-gravitational effects on gauge-invariant scalar and tensor perturbations during inflation: The slow-roll approximation
- Multifractional theories: an unconventional review
- Diffusion on -Minkowski space
- The Emergence of Spacetime, or, Quantum Gravity on Your Desktop
- Constraining non-commutative space-time from GW150914
- A new look at loop quantum gravity
- Nonlocal Scalar Quantum Field Theory from Causal Sets
- Generating Scale-Invariant Perturbations from Rapidly-Evolving Equation of State
- Dimensional flow in discrete quantum geometries
- Nonlinear stability in nonlocal gravity
- Stochastic gravitational-wave background in quantum gravity
- Ekpyrotic Cosmology with a Zero-Shear S-Brane
- Evidence for Asymptotic Safety from Dimensional Reduction in Causal Dynamical Triangulations
- Propagation of quantum gravity-modified gravitational waves on a classical FLRW spacetime
- Spectral dimensions and dimension spectra of quantum spacetimes