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

被引：12

作者：

Arikawa, M ^{[1
]}

Yamamoto, T

Saiga, Y

Kuramoto, Y

机构：

[1] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan

[2] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany

[3] Univ Tokyo, Inst Solid State Phys, Tokyo 1068666, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1999年 / 68卷 / 12期

关键词：

spin-charge separation; supersymmetric t-J model; charge dynamics; elementary excitation; fractional statistics; Sutherland model;

D O I：

10.1143/JPSJ.68.3782

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The dynamical charge structure factor N(Q,omega) with Q smaller than the Fermi wave number is derived analytically for the one-dimensional supersymmetric t-J model with 1/r(2) interaction. Strong spin-charge separation in dynamics is found. N(Q,omega) which a given electron density does not depend on the spin polarization of a system with an arbitrary size, In the thermodynamic limit, only two holons and one antiholon contribute to N(Q,omega). These results together with generalized ones for the SU(K,1) supersymmetric t-J model are derived via solution of the Sutherland model in the strong coupling limit.

引用

页码：3782 / 3785

页数：4

共 27 条

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