Supercurrent induced by tunneling Bogoliubov excitations in a Bose-Einstein condensate
Supercurrent induced by tunneling Bogoliubov excitations in a Bose-Einstein condensate
We study the tunneling of Bogoliubov excitations through a barrier in a Bose-Einstein condensate. We extend our previous work [Phys. Rev. A \textbf{78}, 013628 (2008)] to the case when condensate densities are different between the left and right of the barrier potential. In the framework of the Bogoliubov mean-field theory, …