Intertial Frame Dragging in an Acoustic Analogue spacetime
arXiv:1510.01436 · doi:10.1002/andp.201700231
Abstract
We report an incipient exploration of the Lense-Thirring precession effect in a rotating \textit{acoustic analogue black hole} spacetime. An exact formula is deduced for the precession frequency of a gyroscope due to inertial frame dragging, close to the ergosphere of a `Draining Bathtub' acoustic spacetime which has been studied extensively for acoustic Hawking radiation of phonons and also for `superresonance'. The formula is verified by embedding the two dimensional spatial (acoustic) geometry into a three dimensional one where the similarity with standard Lense-Thirring precession results within a strong gravity framework is well known. Prospects of experimental detection of this new `fixed-metric' effect in acoustic geometries, are briefly discussed.
arXiv commentLaTex; 6 pages including 1 figure; paper thoroughly revised, accepted for publication in Annalen der Physik
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