36 citations · 83 across the 4 of their papers we have counts for
4 papers
Huge quantum particle number fluctuations in a two-component Bose gas in a double-well potential
Pawel Zin, Bartlomiej Oles, Krzysztof Sacha
Two component Bose gas in a double well potential with repulsive interactions may undergo a phase separation transition if the inter-species interactions outweigh the intra-species…
Quantum phase transition and critical fluctuations of an attractive Bose gas in a double well potential
P. Ziń, J. Chwedeńczuk, B. Oleś +2
We consider a Bose gas with an attractive interaction in a symmetric double well potential. In the Hartree approximation, the ground state solution spontaneously breaks the symmetr…
N-conserving Bogoliubov vacuum of a two component Bose-Einstein condensate: Density fluctuations close to a phase separation condition
Bartlomiej Oles, Krzysztof Sacha
Two-component Bose-Einstein condensates are considered within a number conserving version of the Bogoliubov theory. We show that the Bogoliubov vacuum state can be obtained in the…
Solitons in coupled atomic-molecular Bose-Einstein condensates in a trap
B. Oles, K. Sacha
We consider coupled atomic-molecular Bose-Einstein condensate system in a quasi-one-dimensional trap. In the vicinity of a Feshbach resonance the system can reveal soliton-like beh…