Open AccessMODULATION INSTABILITY IN TWO COMPONENT BOSE-EINSTEIN CONDENSATE WITH RELATIVE COMPONENT MOTION
Author(s) -
A. P. Ivashin,
Elena Marinenko
Publication year - 2019
Publication title -
problems of atomic science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.216
H-Index - 17
eISSN - 1562-6016
pISSN - 1682-9344
DOI - 10.46813/2019-122-096
Subject(s) - instability , physics , modulation (music) , oscillation (cell signaling) , homogeneous , component (thermodynamics) , bose–einstein condensate , nonlinear system , parameter space , space (punctuation) , mechanics , classical mechanics , quantum electrodynamics , quantum mechanics , statistical physics , mathematics , statistics , genetics , acoustics , biology , linguistics , philosophy
The development of modulation instability in a spatially homogeneous two-component Bose-Einstein condensate (BEC), in which the interacting components move through each other at a relative speed, is investigated. It is shown that nonlinear dynamics, leading to modulation instability, is determined by both the values of the constant interaction and the relative velocity between the components. The maximum oscillation increment is found and the limits of the existence of modulation instability in the space of wave numbers are determined.