Time and Matter in the Interaction between Gravity and Quantum Fluids: Are there Macroscopic Quantum Transducers between Gravitational and Electromagnetic waves?

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dc.creatorChiao, Raymond Y.
dc.creatorFitelson, Walter J.
dc.date2003-03-23
dc.date2003-04-03
dc.date.accessioned2026-07-07T03:27:44Z
dc.date.available2026-07-07T03:27:44Z
dc.descriptionMeasurements of the tunneling time are briefly reviewed. Next, time and matter in general relativity and quantum mechanics is examined. In particular, the question arises: How does gravitational radiation interact with a coherent quantum many-body system (a ``quantum fluid'')? A minimal coupling rule for the coupling of the electron spin to curved spacetime in general relativity implies the possibility of a coupling between electromagnetic (EM) and gravitational (GR) radiation mediated by a quantum Hall fluid. This suggests that quantum transducers between these two kinds of radiation fields might exist. We report here on a first attempt at a Hertz-type experiment, in which a high-$\rm{T_c}$ superconductor (YBCO) was the material used as a quantum transducer to convert EM into GR microwaves, and a second piece of YBCO in a separate apparatus was used to back-convert GR into EM microwaves. An upper limit on the conversion efficiency of YBCO was measured to be $1.6\times10^{-5}$.
dc.description16 pages, 4 figures, in proceedings of the "Time and Matter" conference in Venice of 2002, to be published by World Scientific
dc.identifierhttps://arxiv.org/abs/gr-qc/0303089
dc.identifierhttp://arxiv.org/abs/gr-qc/0303089
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/34546
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleTime and Matter in the Interaction between Gravity and Quantum Fluids: Are there Macroscopic Quantum Transducers between Gravitational and Electromagnetic waves?
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