LOCALIZATION IN INTERACTING, DISORDERED, BOSE SYSTEMS

被引:262
作者
SCALETTAR, RT [1 ]
BATROUNI, GG [1 ]
ZIMANYI, GT [1 ]
机构
[1] UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550
关键词
D O I
10.1103/PhysRevLett.66.3144
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We use quantum Monte Carlo techniques to study a one-dimensional, disordered, interacting, Bose Hamiltonian. The effect of disorder on the Mott-insulator Portion of the phase diagram is determined. We observe the destruction of superfluidity by disorder at incommensurate densities, for the first time demonstrating the emergence of a "Bose-glass" phase. In addition to these strong-coupling phases, we observe an unanticipated reentrance into an Anderson-type localized regime for weak couplings.
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页码:3144 / 3147
页数:4
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