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APS » Journals » Phys. Rev. Lett. » Volume 104 » Issue 16
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Phys. Rev. Lett. 104, 165301 (2010) [4 pages]

Observability of Quantum Criticality and a Continuous Supersolid in Atomic Gases

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S. Diehl1,2, M. Baranov1,2,3, A. J. Daley1,2, and P. Zoller1,2
1Institute for Theoretical Physics, University of Innsbruck, A-6020 Innsbruck, Austria
2Institute for Quantum Optics and Quantum Information of the Austrian Academy of Sciences, A-6020 Innsbruck, Austria
3RRC “Kurchatov Institute”, Kurchatov Square 1, 123182 Moscow, Russia

Received 23 October 2009; revised 14 February 2010; published 20 April 2010

We analyze the Bose-Hubbard model with a three-body hard-core constraint by mapping the system to a theory of two coupled bosonic degrees of freedom. We find striking features that could be observable in experiments, including a quantum Ising critical point on the transition from atomic to dimer superfluidity at unit filling, and a continuous supersolid phase for strongly bound dimers.

© 2010 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.104.165301
DOI:
10.1103/PhysRevLett.104.165301
PACS:
64.70.Tg, 03.75.Lm, 05.30.Jp, 67.85.-d
 
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