77 citations · 671 across the 49 of their papers we have counts for
5 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…
Non-diffusive phase spreading of a Bose-Einstein condensate at finite temperature
Alice Sinatra, Yvan Castin, Emilia Witkowska
We show that the phase of a condensate in a finite temperature gas spreads linearly in time at long times rather than in a diffusive way. This result is supported by classical fiel…
Classification of zero-energy resonances by dissociation of Feshbach molecules
Thomas M. Hanna, Krzysztof Goral, Emilia Witkowska +1
We study the dissociation of Feshbach molecules by a magnetic field sweep across a zero-energy resonance. In the limit of an instantaneous magnetic field change, the distribution o…
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…
Dynamics of quasisolitons in degenerate fermionic gases
Emilia Witkowska, Miroslaw Brewczyk
We investigate the dynamics of the system of multiple bright and dark quasisolitons generated in a one-component ultracold Fermi gas via the phase imprinting technique in terms of…