Anomalous Quantum Glass of Bosons in a Random Potential in Two Dimensions
文献类型：期刊论文
| 作者 | Wang, YC; Guo, WA; Sandvik, AW |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2015 |
| 卷号 | 114期号:10页码:105303 |
| 通讯作者 | Wang, YC (reprint author), Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China. |
| 英文摘要 | We present a quantum Monte Carlo study of the "quantum glass" phase of the two-dimensional Bose-Hubbard model with random potentials at filling rho = 1. In the narrow region between the Mott and superfluid phases, the compressibility has the form kappa similar to exp(-b/T alpha) + c with a < 1 and c vanishing or very small. Thus, at T = 0 the system is either incompressible (a Mott glass) or nearly incompressible (a Mott-glass-like anomalous Bose glass). At stronger disorder, where a glass reappears from the superfluid, we find a conventional highly compressible Bose glass. On a path connecting these states, away from the superfluid at larger Hubbard repulsion, a change of the disorder strength by only 10% changes the low-temperature compressibility by more than 4 orders of magnitude, lending support to two types of glass states separated by a phase transition or a sharp crossover. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Multidisciplinary |
| 关键词[WOS] | SUPERFLUID-INSULATOR TRANSITION ; MOTT INSULATOR ; SYSTEMS ; LOCALIZATION |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/21058]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 推荐引用方式 GB/T 7714 | Wang, YC,Guo, WA,Sandvik, AW. Anomalous Quantum Glass of Bosons in a Random Potential in Two Dimensions[J]. PHYSICAL REVIEW LETTERS,2015,114(10):105303. |
| APA | Wang, YC,Guo, WA,&Sandvik, AW.(2015).Anomalous Quantum Glass of Bosons in a Random Potential in Two Dimensions.PHYSICAL REVIEW LETTERS,114(10),105303. |
| MLA | Wang, YC,et al."Anomalous Quantum Glass of Bosons in a Random Potential in Two Dimensions".PHYSICAL REVIEW LETTERS 114.10(2015):105303. |
入库方式： OAI收割
来源：理论物理研究所
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