Zobrazeno 1 - 10
of 59
pro vyhledávání: '"Bezett, A."'
Publikováno v:
Phys. Rev. A 89, 013631 (2014). D. Kobyakov, A. Bezett, E. Lundh, M. Marklund, V. Bychkov
Quantum turbulence (QT) generated by the Rayleigh-Taylor instability in binary immiscible ultracold 87Rb atoms at zero temperature is studied theoretically. We show that the quantum vortex tangle is qualitatively different from previously considered
Externí odkaz:
http://arxiv.org/abs/1309.1786
Publikováno v:
Phys. Rev. A 89, 023632 (2014)
We consider dynamic, i.e., frequency-dependent, correlations in non-condensed ultracold atomic Bose gases. In particular, we consider the single-particle correlation function and its power spectrum. We compute this power spectrum for a one-component
Externí odkaz:
http://arxiv.org/abs/1309.0667
Publikováno v:
Phys. Rev. A 85, 013630 (2012)
We study parametric resonance of capillary waves on the interface between two immiscible Bose-Einstein condensates pushed towards each other by an oscillating force. Guided by analytical models, we solve numerically the coupled Gross-Pitaevskii equat
Externí odkaz:
http://arxiv.org/abs/1206.4834
Publikováno v:
Phys. Rev. A 85, 013630 (2012)
We consider a two-component Bose-Einstein condensate in a quasi-one-dimensional harmonic trap, where the immiscible components are pressed against each other by an external magnetic force. The zero-temperature non-stationary Gross-Pitaevskii equation
Externí odkaz:
http://arxiv.org/abs/1112.2566
Autor:
Bezett, Alice, Lundh, Emil
Temporal correlations in the harmonically trapped finite temperature Bose gas are studied through the calculation of appropriate phase correlation functions. A wide parameter regime is covered to ascertain the role that temperature fluctuations and t
Externí odkaz:
http://arxiv.org/abs/1108.2119
Publikováno v:
Phys. Rev. A 83, 043623 (2011)
The dynamics of an interface in a two-component Bose-Einstein condensate driven by a spatially uniform time-dependent force is studied. Starting from the Gross-Pitaevskii Lagrangian, the dispersion relation for linear waves and instabilities at the i
Externí odkaz:
http://arxiv.org/abs/1101.5998
The magnetically induced Richtmyer-Meshkov instability in a two-component Bose-Einstein condensate is investigated. We construct and study analytical models describing the development of the instability at both the linear and nonlinear stages. The mo
Externí odkaz:
http://arxiv.org/abs/1006.2261
Autor:
Bezett, A., Blakie, P. B.
Publikováno v:
Phys. Rev. A 79, 033611 (2009)
We develop a practical theoretical formalism for studying the critical properties of a trapped Bose-Einstein condensate using the projected Gross-Pitaevskii equation. We show that this approach allows us investigate the behavior of the correlation le
Externí odkaz:
http://arxiv.org/abs/0812.1332
Autor:
Bezett, A., Blakie, P. B.
Publikováno v:
Phys. Rev. A 79, 023602 (2009)
We develop formalism based on the projected Gross Pitaevskii equation to simulate the finite temperature collective mode experiments of Jin et al. [PRL 78, 764 (1997)]. We examine the $m=0$ and $m=2$ quadrupolar modes on the temperature range $0.51T_
Externí odkaz:
http://arxiv.org/abs/0811.2635
Publikováno v:
Phys. Rev. A 77, 023602 (2008)
We develop a computationally tractable method for calculating correlation functions of the finite temperature trapped Bose gas that includes the effects of s-wave interactions. Our approach uses a classical field method to model the low energy modes
Externí odkaz:
http://arxiv.org/abs/0710.5798