Analog Electromagnetic Black Holes Made of Water

Igor I. Smolyaninov

doi:10.53941/ijgtp.2025.100007

Abstract

A novel analog black hole model is introduced, which is based on the divergent dielectric permittivity of water in the radio frequency range. An interesting aspect of this system is the possibility to study the appearance of surface electromagnetic modes in such an analog black hole model. The gravity-capillary waves on the water surface, which act as analogs of spacetime fluctuations, lead to appearance of gradient surface electromagnetic waves at the emulated horizon. Such models become especially interesting in the case of extreme Reissner-Nordstrom black holes which are shown to behave as spherical waveguide resonators, in which photons and gravitons acquire effective mass. Optical and gravitational wave lasing may be expected in such situations based on the analogy with optical whispering gallery mode lasers made of water droplets.

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