Binary gravitational waves as probes of quantum graviton states
arXiv:2510.23326 · doi:10.1103/yp4j-v7lg
Abstract
It is well known that the most reliable way to reveal the quantum nature of light is through photon number statistics, since photons exhibiting sub-Poissonian statistics unambiguously demonstrate their quantum behavior. In this paper, we show that gravitons emitted by binary systems can, in principle, exhibit analogous sub-Poissonian statistics. The key idea is that the vacuum state of gravitons may not be the standard Minkowski vacuum but rather a nonclassical state imprinted with the physics of the early Universe, such as inflation. Accordingly, gravitational waves from binary systems provide a means to probe the graviton states generated in the early Universe. As a concrete example, we show that squeezed graviton states originating from inflation can, in principle, imprint nonclassical graviton number statistics on gravitational waves from binary systems. In particular, we identify the frequency range in which the resulting coherent-squeezed graviton state can exhibit sub-Poissonian statistics. A realistic assessment of observational feasibility is left for future work.
19 pages
References in corpus (24)
- Observation of Gravitational Waves from a Binary Black Hole Merger
- Cosmology with the Laser Interferometer Space Antenna
- Gauge Fields and Inflation
- Detecting High-Frequency Gravitational Waves with Microwave Cavities
- Upper limits on the amplitude of ultra-high-frequency gravitational waves from graviton-photon mixing
- Signatures of the Quantization of Gravity at Gravitational Wave Detectors
- Probing GHz Gravitational Waves with Graviton-magnon Resonance
- The Noise of Gravitons
- Noise and decoherence induced by gravitons
- Possible detection of nonclassical primordial gravitational waves with Hanbury Brown - Twiss interferometry
- A formalism for magnon gravitational wave detectors
- Exploring High Frequency Gravitational Waves with Magnons
- Hanbury Brown-Twiss interferometry and second-order correlations of inflaton quanta
- Nonclassical primordial gravitational waves from the initial entangled state
- Bound on Quantum Fluctuations in Gravitational Waves from LIGO-Virgo
- Search for high-frequency gravitational waves with Rydberg atoms
- Quantum coherence of cosmological perturbations
- Glauber theory and the quantum coherence of curvature inhomogeneities
- Detecting kHz gravitons from a neutron star merger with a multi-mode resonant mass detector
- Superradiant Axionic Black-Hole Clouds as Seeds for Graviton Squeezing
- Coherent State Description of Gravitational Waves from Binary Black Holes
- Squeezed gravitons from superradiant axion fields around rotating black holes
- Entanglement and squeezing of gravitational waves
- HBT Interferometry and Quantum Nature of Primordial Gravitational Waves in Hořava-Lifshitz Gravity