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We study, by means of a variational method, the stability of a condensate in a magnetically trapped atomic Bose gas with a negative scattering length and find that the condensate is unstable inâ€¦ (More)

- U. Al Khawaja, Henk T. C. Stoof
- Nature
- 2001

Multi-component Boseâ€“Einstein condensates provide opportunities to explore experimentally the wealth of physics associated with the spin degrees of freedom. The ground-state properties and line-likeâ€¦ (More)

- U Al Khawaja, Henk T. C. Stoof, Randall G Hulet, Kevin E. Strecker, Guthrie B. Partridge
- Physical review letters
- 2002

We variationally determine the dynamics of bright soliton trains composed of harmonically trapped Bose-Einstein condensates with attractive interatomic interactions. In particular, we obtain theâ€¦ (More)

In an atomic gas near a Feshbach resonance, the energy of two colliding atoms is close to the energy of a bound state, i.e., a molecular state, in a closed channel that is coupled to the incomingâ€¦ (More)

We review and extend the theory of the dynamics of Bose-Einstein condensation in weakly interacting atomic gases. We present in a unified way both the semiclassical theory as well as the full quantumâ€¦ (More)

- Maarten Bijlsma, B. A. Heringa, Henk T. C. Stoof
- 1999

We consider a mixture of a single-component Bose gas and a two-component Fermi gas at temperatures where the Bose gas is almost fully condensed. In such a mixture, two fermionic atoms can interactâ€¦ (More)

A Feshbach resonance in the s-wave scattering length occurs if the energy of the two atoms in the incoming open channel is close to the energy of a bound state in a coupled closed channel. Startingâ€¦ (More)

- Henk T. C. Stoof
- 2008

We calculate the excitation frequencies of the m = 0 monopole and m = 2 quadrupole modes in the collisionless regime by solving a non-linear SchrÃ¶dinger equation for the condensate, coupled to aâ€¦ (More)

We consider the dynamics of a quantum degenerate trapped gas of 7Li atoms. Because the atoms have a negatives-wave scattering length, a Bose condensate of 7Li becomes mechanically unstable when theâ€¦ (More)

- G. B. Partridge, Wenhui Li, Yiping Liao, Randall G Hulet, Masudul Haque, Henk T. C. Stoof
- Physical review letters
- 2006

The real-space densities of a polarized strongly interacting two-component Fermi gas of 6Li atoms reveal two low-temperature regimes, both with a fully paired core. At the lowest temperatures, theâ€¦ (More)