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Beig, R., Chruściel, P.T., Hilweg, C., Kornreich, P. and Walther, P. (2018) Weakly Gravitating Isotropic Waveguides. Classical and Quantum Gravity, 35, Article ID: 244001.
https://doi.org/10.1088/1361-6382/aae873

has been cited by the following article:

• TITLE: Derivation of Cylindrical Internal-Surface Acoustic Waves and Their Small Gravity Effect

  AUTHORS: Philipp G. Kornreich

  KEYWORDS: Elastic Constant Tensor, Continuum Mechanics, Lagrangian, Wave Equation, Surface Acoustic Waves, Newtonian Gravity

  JOURNAL NAME: Journal of Modern Physics, Vol.15 No.12, November 12, 2024

  ABSTRACT: The properties of Cylindrical Internal-Surface Acoustic Waves (CISAW) propagating on the inside surface of a high purity fused quartz tubular fiber are derived from basic principles using a variational method. The CISAW consist of Energy Momentum Packets (EMP) moving in a looping motion. The EMP have mass and are affected by gravity similar to a pendulum bob. The effect of gravity on CISAW is much larger than the effect of gravity in a light wave. Therefore, one can build much smaller CISAW Interferometer Gravity wave Observatories (CIGO) than the present km size Light Interferometer Gravity wave Observatories (LIGO). An array of CIGO can be used to detect gravity wave images. Since the wavelength of gravity waves is much larger than the expected spacing between CIGO array elements this would result in sub-wavelength images. It would be interesting to determine what new discoveries could be made using such an array.