Massive scalar perturbations and quasiresonance of a rotating black hole in analog gravity

Aug 30, 2024
28 pages
Published in:
  • Phys.Rev.D 110 (2024) 10, 104058
  • Published: Nov 15, 2024
e-Print:
DOI:

Citations per year

20232024202503
Abstract: (APS)
It was reported that the optical field fluctuations in self-defocusing media can be described by sound waves propagating in a two-dimensional photon fluid which is controlled by the driving laser beam. The photon fluid can be regarded as the background where the sound waves propagate in the way of a scalar field propagating in curved spacetime, thus providing a platform to study physics in analog gravity. In this analog gravity model, to be more specific, in the analog rotating black hole background, we study the quasinormal modes (QNMs) of massive scalar field perturbations, as a natural extension of the recent work on the massless QNMs in photon fluid. We analyze the properties of the spectrum of fundamental QNMs which are calculated by the continued fraction method and WKB approximation method. We also investigate the quasiresonance and find that it may exist in this analog gravity model. The existence of quasiresonance is important to study the QNMs in analog gravity apparatus due to its slow damping rate and longevity which give us better opportunity to probe and study it in laboratory.
Note:
  • 28 pages, 6 figures
Loading ...