量子准晶体中的自诱导玻色玻璃相

IF 4.4 2区 物理与天体物理 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY
M. Grossklags , M. Ciardi , V. Zampronio , F. Cinti , A. Mendoza-Coto
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引用次数: 0

摘要

我们研究了在利夫希茨-佩特里希类型粒子之间的成对相互作用诱导下,自持玻色准晶中玻色玻璃相的出现。通过使用动量空间设计的均场变分法以及格罗斯-皮塔耶夫斯基模拟,我们确定了模型的相图。通过对局部和全局超流体部分的研究,我们确定了超固相、超准晶相、玻色玻璃相和绝缘相。玻色玻璃相作为一种准晶相出现,其中全局超流体基本上为零,而在准晶模式的某些环状结构中,局部超流体仍然是有限的。此外,我们还对粒子之间的相互作用使准晶体相稳定的情况进行了连续空间路径积分蒙特卡洛模拟。我们的结果表明,随着粒子间相互作用强度的增加,系统会经历一连串与超准晶体、玻色玻璃和准晶绝缘体热力学相一致的状态。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Self-induced Bose glass phase in quantum quasicrystals
We study the emergence of Bose glass phases in self sustained bosonic quasicrystals induced by a pair interaction between particles of Lifshitz–Petrich type. By using a mean-field variational method designed in momentum space as well as Gross–Pitaevskii simulations we determine the phase diagram of the model. The study of the local and global superfluid fraction allows the identification of supersolid, super quasicrystal, Bose glass and insulating phases. The Bose glass phase emerges as a quasicrystal phase in which the global superfluidity is essentially zero, while the local superfluidity remains finite in certain ring structures of the quasicrystalline pattern. Furthermore, we perform continuous space Path Integral Monte Carlo simulations for a case in which the interaction between particles stabilizes a quasicrystal phase. Our results show that as the strength of the interaction between particles is increased the system undergoes a sequence of states consistent with the super quasicrystal, Bose glass, and quasicrystal insulator thermodynamic phases.
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来源期刊
Results in Physics
Results in Physics MATERIALS SCIENCE, MULTIDISCIPLINARYPHYSIC-PHYSICS, MULTIDISCIPLINARY
CiteScore
8.70
自引率
9.40%
发文量
754
审稿时长
50 days
期刊介绍: Results in Physics is an open access journal offering authors the opportunity to publish in all fundamental and interdisciplinary areas of physics, materials science, and applied physics. Papers of a theoretical, computational, and experimental nature are all welcome. Results in Physics accepts papers that are scientifically sound, technically correct and provide valuable new knowledge to the physics community. Topics such as three-dimensional flow and magnetohydrodynamics are not within the scope of Results in Physics. Results in Physics welcomes three types of papers: 1. Full research papers 2. Microarticles: very short papers, no longer than two pages. They may consist of a single, but well-described piece of information, such as: - Data and/or a plot plus a description - Description of a new method or instrumentation - Negative results - Concept or design study 3. Letters to the Editor: Letters discussing a recent article published in Results in Physics are welcome. These are objective, constructive, or educational critiques of papers published in Results in Physics. Accepted letters will be sent to the author of the original paper for a response. Each letter and response is published together. Letters should be received within 8 weeks of the article''s publication. They should not exceed 750 words of text and 10 references.
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