409 citations · 2.1k across the 69 of their papers we have counts for
8 papers · 1 filter
Bose statistics and classical fields
Emilia Witkowska, Mariusz Gajda, Kazimierz Rzążewski
Classical fields counterpart of the ideal Bose gas statistics in a trap is investigated by performing calculations in the canonical ensemble. There exists the optimal cut-off which…
Spinor condensate of Rb as a dipolar gas
Tomasz Świsłocki, Mirosław Brewczyk, Mariusz Gajda +1
We consider a spinor condensate of Rb atoms in F=1 hyperfine state confined in an optical dipole trap. Putting initially all atoms in component we find that the syst…
Decay of multiply charged vortices at nonzero temperatures
Tomasz Karpiuk, Miroslaw Brewczyk, Mariusz Gajda +1
We study the instability of multiply charged vortices in the presence of thermal atoms and find various scenarios of splitting of such vortices. The onset of the decay of a vortex…
Coherence properties of spinor condensates at finite temperatures
Krzysztof Gawryluk, Miroslaw Brewczyk, Mariusz Gajda +1
We consider a spinor condensate of 87Rb atoms in its F=1 hyperfine state at finite temperatures. Putting initially all atoms in m_F=0 component we find that the system evolves into…
Resonant Einstein-de Haas effect in a rubidium condensate
Krzysztof Gawryluk, Mirosław Brewczyk, Kai Bongs +1
We numerically investigate a condensate of Rb atoms in an F=1 hyperfine state confined in an optical dipole trap. Assuming the magnetic moments of all atoms are initially al…
From a nonlinear string to a weakly interacting Bose gas
Emilia Witkowska, Mariusz Gajda, Jan Mostowski
We investigate a real scalar field whose dynamics is governed by a nonlinear wave equation. We show that classical description can be applied to a quantum system of many interactin…
Formation of soliton trains in Bose-Einstein condensates by temporal Talbot effect
Krzysztof Gawryluk, Mirosław Brewczyk, Mariusz Gajda +1
We study the recent observation of formation of matter-wave soliton trains in Bose-Einstein condensates. We emphasize the role of the box-like confinement of the Bose-Einstein cond…
Classical fields approximation for cold weakly interacting bosons without free parameters
Lukasz Zawitkowski, Miroslaw Brewczyk, Mariusz Gajda +1
Classical fields approximation to cold weakly interacting bosons allows for a unified treatment of condensed and uncondensed parts of the system. Until now, however, the quantitati…