Spin dynamics in the supersymmetric t-J model with inverse-square interaction

被引：7
|
作者：
Arikawa, M [1 ]
Yamamoto, T
Saiga, Y
Kuramoto, Y
机构：
[1] Univ Melbourne, Dept Math & Stat, Melbourne, Vic 3010, Australia
[2] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany
[3] Univ Adelaide, Dept Phys & Math Phys, Adelaide, SA 5005, Australia
[4] Tokyo Inst Technol, Dept Phys, Tokyo 1528551, Japan
[5] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan
来源：
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2004年 / 73卷 / 04期
关键词：
spin dynamics; t-J model; supersymmetry; fractional statistics; Sutherland model;
D O I：
10.1143/JPSJ.73.808
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The dynamical spin structure factor S(q, omega) is obtained analytically for the one-dimensional supersymmetric t-J model with 1/r(2) interaction. In contrast with the conventional view on the spin-charge separation, interpretation of S(q, omega) requires both fractionalized and non-fractionalized electrons depending on the energy-momentum region. At low energies, the spectrum is naturally explained in terms of spinons, holons, and antiholons, all of which obey fractional exclusion statistics.
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页码：808 / 811
页数：4
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