We consider interacting Bose particles in an external local potential. It is shown that large class of quasicrystal potentials cannot sustain any type Bose-Einstein condensates. Accordingly, at spatial dimensions D ≤ 2 such a supersolid not possible via condensates finite temperatures. The latter also hold true for the two-dimensional Fibonacci tiling. However, supersolids do arise from infinit...

We present a generic route to classical light condensation (LC) in linear photonic mode systems, such as cw lasers, with different grounds from regular Bose-Einstein condensation (BEC). LC is based on weighting the modes in a noisy environment (spontaneous emission, etc.) in a loss-gain scale, rather than in photon energy. It is characterized by a sharp transition from a multi- to single-mode o...

We report Bose-Einstein condensation of (84)Sr in an optical dipole trap. Efficient laser cooling on the narrow intercombination line and an ideal s-wave scattering length allow the creation of large condensates (N(0) approximately 3 x 10(5)) even though the natural abundance of this isotope is only 0.6%. Condensation is heralded by the emergence of a low-velocity component in time-of-flight im...