Algorithm of the selection of materials for detector of high-frequency gravitational waves

• Published in: European physical journal plus 2023-03, Vol.138 (3), p.222, Article 222
• Main Author: Goryainov, S. V.
• Format: Article
• Language: English
• Subjects: Acoustics; Algorithms; Applied and Technical Physics; Atomic; Black holes; Complex Systems; Condensed Matter Physics; Detectors; Electromagnetism; Gravitational waves; Gravity; Mathematical and Computational Physics; Molecular; Neutron stars; Optical and Plasma Physics; Physics; Physics and Astronomy; Regular Article; Search algorithms; Sensitivity; Sensors; Tensors; Theoretical; Wave interaction
• ISSN: 2190-5444; 2190-5444
• DOI: 10.1140/epjp/s13360-023-03770-3

Recently, the search for mechanisms of the functioning of high-frequency gravitational wave (HF-GW) detectors (at frequency ~ 1 kHz–1 MHz and higher) and the increasing their sensitivity has been relevant. A method has been proposed to increase the sensitivity of these detectors due to the special properties of the material used as a receiver of HF gravitational waves. Taking into account the related origin of the stress tensor of forces in the GW due to the distortion of the metric and the strain of the solid body, the coefficients of their quadratic and cubic elastic interaction are introduced and analyzed in the work. An algorithm of the searching of materials for a wideband HF-GW detector based on the elastic interaction of gravitational and phonon waves is presented. The theoretical substantiation of such a mechanism of wave interaction is discussed. Using this algorithm, one can choose a material for the HF-GW detector, which could significantly increase its sensitivity compared to that when commonly using crystalline α -quartz. Graphic Abstract