Welcome to the homepage of the Ultracold Atoms Group at the Niels Bohr Institute
Below you will find a short description of our research interests, our weekly seminars and information regarding the graduate-level self-study course on "Theory of Cold Atoms" given by Profs. Pethick and Smith.
- Our theoretical work on ultracold gases focuses on the properties of Bose and Fermi gases at temperatures of the order of one millionth of a degree. At these low temperatures, the effects of quantum degeneracy manifest themselves in Bose-Einstein condensation (for bosons) and the creation of a pair-correlated superfluid state (for fermions). The interatomic interactions can be tuned by magnetic fields in such a way that the correlations between atoms become strong. Understanding the properties of these systems provides a fundamental challenge to many-body theory.
- The group meets on Thursdays at 13.15 in Aud. B at the Niels Bohr Institute on Blegdamsvej. The meetings feature presentations of ongoing work by group members, seminar talks by visitors, reports on new developments in the literature, as well as general discussions. The group meetings provide an opportunity for Master and Ph.D. students to discuss their work in an informal manner with other members of the group.
- A course "Theory of Cold Atoms" is given by C.J. Pethick and H. Smith, based on their book "Bose-Einstein Condensation in Dilute Gases" (Cambridge University Press, 2002). The exam is oral. The course is organized such that students can study the course material on their own and arrange for consultations with the teachers. The course will discuss properties of both bosons and fermions, based on the second edition of the book mentioned above. Contact either Prof. Pethick or Prof. Smith for further information.
- The PhD theses of Pietro Massignan and Misha Zvonarev, former graduate students in the group, can now be downloaded from here and here.
Ultracold Atoms Group at the Niels Bohr Institute
Webmaster Alexandru Nicolin
Group members
Interests: a) rapidly rotating Bose-Einstein Condensates, b) strongly correlated Fermi systems.
Interests: a) correlations in one-dimensional Bose gases, b) ions in Bose-Einstein condensates, c) viscosity and collective modes in Fermi gases.
Interests: a) effect of rotation and pair correlation in finite quantal systems.
Interests: a) physical implementations of quantum information protocols in atoms, ions, and solid state systems, and in particular the construction of quantum repeaters and atomic ensembles, b) engineering interesting physical effects with ultra cold atoms.
Interests: a.) strongly interacting gases, b) transport properties, c) collective modes, d) superfluidity, e) vortex physics, f) light scattering.
Interests: a) vortices and vortex lattices in Bose-Einstein condensates, b) nuclear "pasta" phases in dense stars.
Interests: a) BEC loaded into optical lattices and super-lattices, b) nonlinear effects in two-component BECs.
Associates
Interests: a) rapidly rotating Bose-Einstein condensates, b) correlations in paired fermions, c) weakly interacting systems near the transition temperature.
Henning HEISELBERG
(Syddansk University)
Interests: a) strongly interacting fermions, b) optical lattices, c) sound and collective modes.