Anyonic Liquids in Nearly Saturated Spin Chains

被引：6
|
作者：
Rahmani, Armin [1 ,2 ]
Feiguin, Adrian E. [3 ]
Batista, Cristian D. [1 ,2 ]
机构：
[1] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA
[2] Los Alamos Natl Lab, CNLS, Los Alamos, NM 87545 USA
[3] Northeastern Univ, Dept Phys, Boston, MA 02115 USA
来源：
PHYSICAL REVIEW LETTERS | 2014年 / 113卷 / 26期
基金：
美国国家科学基金会;
关键词：
BOSE-EINSTEIN CONDENSATION; QUANTUM RENORMALIZATION-GROUPS; MODELS;
D O I：
10.1103/PhysRevLett.113.267201
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Most Heisenberg-like spin chains flow to a universal free-fermion fixed point near the magnetic-field induced saturation point. Here, we show that an exotic fixed point, characterized by two species of low-energy excitations with mutual anyonic statistics, may also emerge in such spin chains if the dispersion relation has two minima. By using bosonization, two-magnon exact calculations, and numerical densitymatrix-renormalization-group calculations, we demonstrate the existence of this anyonic-liquid fixed point in an XXZ spin chain with up to second-neighbor interactions. We also identify a range of microscopic parameters, which support this phase.
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页数：6
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