The Cerenkov effect revisited: from swimming ducks to zero modes in gravitational analogs
Abstract
We present an interdisciplinary review of the generalized Cerenkov emission of radiation from uniformly moving sources in the different contexts of classical electromagnetism, superfluid hydrodynamics, and classical hydrodynamics. The details of each specific physical systems enter our theory via the dispersion law of the excitations. A geometrical recipe to obtain the emission patterns in both real and wavevector space from the geometrical shape of the dispersion law is discussed and applied to a number of cases of current experimental interest. Some consequences of these emission processes onto the stability of condensed-matter analogs of gravitational systems are finally illustrated.
Keywords
Cite
@article{arxiv.1202.3494,
title = {The Cerenkov effect revisited: from swimming ducks to zero modes in gravitational analogs},
author = {Iacopo Carusotto and Germain Rousseaux},
journal= {arXiv preprint arXiv:1202.3494},
year = {2015}
}
Comments
Lecture Notes at the IX SIGRAV School on "Analogue Gravity" in Como, Italy from May 16th-21th, 2011