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Dynamical Quasicondensation of Hard-Core Bosons at Finite Momenta

last modified Apr 18, 2016 12:33 PM
Our paper on the emergence of coherence far from equilibrium was published in PRL (PRL 115, 175301) and has an accompanying viewpoint in Physics.
Dynamical Quasicondensation of Hard-Core Bosons at Finite Momenta

Time-of-flight profiles of the expanding cloud. The emerging phase order gives rise to the sharp peaks in the rght images.

Long-range coherence is typically restricted to equilibrium situations at low temperatures. Here we have, in stark contrast, for the first time managed to observe the dynamic emergence of coherence in a system far from equilibrium following a strong quantum quench. Furthermore, the emerging order is different from the ground-state one and cannot be found in the equilibrium phase diagram.

Phys. Rev. Lett. 115, 175301 (2015)

Physics Viewpoint by Stephen R. Clark

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