Vortex dynamics in Bose-Einstein condensates

Paulsamy Muruganandam, Ramaswamy Radha

Chapter 10 explores the dynamics of quantum vortices in Bose–Einstein condensates (BECs), covering single vortex dynamics, vortex lattices, and their behavior in Thomas–Fermi and lowest Landau level regimes. The vortex stability via Bogoliubov equations is addressed. The dynamics of vortices in dipolar BECs and vortex formation through merging condensates are also looked into.

Enikő J. M. Madarassy, Carlo F. Barenghi

Simone Serafini, Luca Galantucci, Elena Iseni +6 more

Understanding interactions between filamentary structures could offer important insights into the dynamics of a wide range of physical systems. A new imaging technique reveals novel vortex filament interactions in a Bose-Einstein condensate (BEC) and helps establish BECs as a powerful laboratory for investigating filament dynamics.

David S. Hall, Daniel V. Freilich, Dylan Bianchi +2 more

Sungjong Woo, Seok Jin Choi, Leslie O. Baksmaty +1 more

In a rotating two-component Bose-Einstein condensate (BEC), the traditional triangular vortex lattice can be replaced by a rectangular vortex lattice or even a structure characterized in terms of vortex sheets, depending on the interspecies interactions. We study the dynamics of this system by analyzing the Bogoliubov excitation spectrum. Excitations familiar to BEC vortex systems are found such as Tkachenko modes, hydrodynamic modes, and surface waves, however, the complex two-component morphology also gives rise to phenomena including shear flow between vortex sheets.

Alexander L. Fetter