Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2007-03-12
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
6 pages
Scientific paper
Interactions between multipolar nuclear transitions and gravitational waves (GWs) are theoretically investigated. Two nonclassical scenarios of the GW detection are suggested. We demonstrate in this report that the long-lived Moessbauer nuclides of multipolar transitions are suitable transducers to detect the impinging GWs. Shape deformation and spin flip of nucleus are derived from the Hamiltonian with gravity interaction. The GWs generate a nuclear quadrupole deformation in analogy with the Stark effect, of which the electric field generates the dipole deformation of electron orbits. Likewise in analogy with the nuclear magnetic resonance that the rotating radio-frequency field flips the nuclear spin, the GWs flip the nuclear spin by the resonant helicity-rotation-gravity coupling. The high energy states of the quadrupole deformation in heavy nuclides can dramatically speed up the multipolar transitions, which may be important for the GW detection particularly in the low frequency band, ranging from 100 nHz to 1 Hz.
Cheng Yao
Shen Jian Qi
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