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The theory of Hawking radiation can be tested in laboratory analogues of black holes. We
use light pulses in nonlinear fiber optics to establish artificial event horizons. Each pulse …

We study the dynamics of a supersonically expanding, ring-shaped Bose-Einstein
condensate both experimentally and theoretically. The expansion redshifts long-wavelength …

Discussion Meeting on The next generation of analogue gravity experiments held at the
Royal Society in December 2019. This theme issue comprises a collection of recent …

We analyze resonant radiation emitted by dispersive shock waves owing to higher-order
dispersive corrections of the leading term in the defocusing nonlinear Schrödinger equation …

In the expanding universe, relativistic scalar fields are thought to be attenuated by “Hubble
friction,” which results from the dilation of the underlying spacetime metric. By contrast, in a …

The linear Doppler shift is familiar as the rise and fall in pitch of a siren as it passes by. Less
well known is the rotational Doppler shift, proportional to the rotation rate between source …

In a draining rotating fluid flow background, surface perturbations behave as a scalar field
on a rotating effective black hole spacetime. We propose a new model for the background …

We show that pulses undergoing wave breaking in nonlinear weakly dispersive fibers
radiate, owing to phase-matching (assisted by higher-order dispersion) of linear dispersive …

Solitons are of fundamental importance in photonics due to applications in optical data
transmission and also as a tool for investigating novel phenomena ranging from light …