MONTE-CARLO STUDY OF THE ENERGY DISPERSION CURVE OF A MOBILE HOLE IN A QUANTUM ANTIFERROMAGNET

被引：8

作者：

BONINSEGNI, M

机构：

[1] National Center for Supercomputing Applications, University of Illinois at Urbana-Champaign, Urbana

来源：

PHYSICS LETTERS A | 1994年 / 188卷 / 4-6期

关键词：

D O I：

10.1016/0375-9601(94)90471-5

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The ground state energy dispersion curve of a single mobile hole in the two-dimensional t-J model is computed numerically by means of the Green function Monte Carlo method on square lattices of various sizes up to 16 x 16. Transient estimation results show evidence of a gap of the order of 0.2t, in the physical region of the model, between the energy value at k = (+/- 1/2 pi, +/- 1/2 pi), which corresponds to the hole band absolute minimum, and k = (+/- pi, 0).

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页码：330 / 336

页数：7

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