Speaker
Prof.
Uwe R. Fischer
(Seoul National University)
Description
We consider a quasi-one-dimensional dipolar condensate in a step-like analogue black hole setup. It is shown that the existence of roton excitations impacts significantly the Hawking radiation spectrum:
The emitted radiation depends on the depth of the roton minimum, and is in general more intense. In addition, we find a novel spontaneous particle creation mechanism with no counterpart in non-dipolar condensates.
Our results establish that dipolar condensates offer a far richer and more versatile environment for the simulation of particle production from the quantum vacuum in the presence of horizon-interfaces than contact-interaction condensates.
Primary authors
Dr
Caio C. Holanda Ribeiro
Prof.
Uwe R. Fischer
(Seoul National University)
