Physicists control transitions between different states of matter
(PHYSorg.com Physics)

An international group of physicists managed for the first time to experimentally observe the transition between two states of matter, propagating polariton-solitons and a Bose-Einstein condensate. Furthermore, physicists developed a theoretical model to explain such transitions and found a way to switch between the states by changing the laser pumping power in the polariton formation process. The results are published in Physical Review Letters.