Conveners
BEC Prize Session I
- Wilhelm Zwerger (Technische Universität München)
- Chair: P. Törmä
- Alexander Fetter (Stanford University, Stanford, USA)
In 1961, I was a graduate student at Harvard when Gross and Pitaevskii published their time-dependent nonlinear Schroedinger equation. The GP equation describes quantized vortices with a core determined by quantum mechanics. My Ph D thesis “Vortices in an imperfect Bose gas” explored various implications of the GP equation, although it gives only a crude description of superfluid helium. ...
The tunability of the interaction strength in ultracold gases using either optical lattices or a Feshbach resonance allows to realize many-body systems whose Hamiltonian is scale invariant. The origin and unique features of the associated continuous symmetry are discussed for the example of a two-component Fermi gas at infinite scattering length. Its superfluid state differs fundamentally...
