Quantum Phase Transitions of Hard-Core Bosons in Background Potentials
نویسندگان
چکیده
منابع مشابه
Quantum phase transitions of hard-core bosons in background potentials.
We study the zero temperature phase diagram of hard-core bosons in two dimensions subjected to three types of background potentials: staggered, uniform, and random. In all three cases there is a quantum phase transition from a superfluid (at small potential) to a normal phase (at large potential), but with different universality classes. As expected, the staggered case belongs to the XY univers...
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Kai He,1,2 Indubala I. Satija,2,3 Charles W. Clark,2 Ana Maria Rey,4 and Marcos Rigol1 1Department of Physics, Georgetown University, Washington, DC, 20057, USA 2Joint Quantum Institute, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA 3Department of Physics, George Mason University, Fairfax, Virginia 22030, USA 4JILA, National Institute of Standards and Technol...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2006
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.97.115703