Dynamics of quantum phase transition in an array of Josephson junctions.
We study the dynamics of the Mott insulator-superfluid quantum phase transition in a periodic 1D array of Josephson junctions. We show that crossing the critical point at a finite rate with a quench time tau(Q) induces finite quantum fluctuations of the current around the loop proportional to tau(-1/6)(Q). This scaling could be experimentally verified with an array of weakly coupled Bose-Einstein condensates or superconducting grains.
Dziarmaga
J
J
Los Alamos National Laboratory, Theory Division, Los Alamos, New Mexico 87545, USA.
Smerzi
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Zurek
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Bishop
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