摘要翻译:
当径向电势达到临界值时,受谐波电势约束的单带电粒子链会突然转变为锯齿形构型,这取决于粒子数。这种结构变化是一个二级相变,其序参量是晶体离链轴的位移。我们用Landau理论分析了该跃迁,发现与[J.Schiffer Phys.Rev.Lett.70,818(1993)]和[Piacente et al Phys.Rev.B69,045324(2004)]的数值预测完全一致。我们的理论允许我们分析地确定系统在过渡点的行为。
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英文标题:
《Structural phase transitions in low-dimensional ion crystals》
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作者:
Shmuel Fishman, Gabriele De Chiara, Tommaso Calarco, and Giovanna
Morigi
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最新提交年份:
2008
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分类信息:
一级分类:Physics 物理学
二级分类:Statistical Mechanics 统计力学
分类描述:Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变,热力学,场论,非平衡现象,重整化群和标度,可积模型,湍流
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一级分类:Physics 物理学
二级分类:Atomic Physics 原子物理学
分类描述:Atomic and molecular structure, spectra, collisions, and data. Atoms and molecules in external fields. Molecular dynamics and coherent and optical control. Cold atoms and molecules. Cold collisions. Optical lattices.
原子和分子结构,光谱,碰撞和数据。外场中的原子和分子。分子动力学与相干和光学控制。冷原子和分子。冷碰撞。光学晶格。
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一级分类:Physics 物理学
二级分类:Quantum Physics 量子物理学
分类描述:Description coming soon
描述即将到来
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英文摘要:
A chain of singly-charged particles, confined by a harmonic potential, exhibits a sudden transition to a zigzag configuration when the radial potential reaches a critical value, depending on the particle number. This structural change is a phase transition of second order, whose order parameter is the crystal displacement from the chain axis. We study analytically the transition using Landau theory and find full agreement with numerical predictions by [J. Schiffer Phys. Rev. Lett. 70, 818 (1993)] and [Piacente et al Phys. Rev. B 69, 045324 (2004)]. Our theory allows us to determine analytically the system's behaviour at the transition point.
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PDF链接:
https://arxiv.org/pdf/710.1831