VARIATIONAL MONTE-CARLO CALCULATIONS FOR THE T'-J MODEL WITH FERMI HOLES AND BOSON SPINS

被引：6

作者：

BONESTEEL, NE ^{[1
]}

WILKINS, JW ^{[1
]}

机构：

[1] OHIO STATE UNIV, DEPT PHYS, COLUMBUS, OH 43210 USA

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 66卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.66.1232

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have performed variational Monte Carlo calculations for the two-dimensional t'-J model (t' is an effective, sublattice-preserving hopping amplitude) using new wave functions which describe fermionic holes hopping in a background liquid of singlet bonds represented by products of bosonic spin operators. The variational energies we obtain from these wave functions can be directly compared with those of other proposed wave functions. We find that our energies are lowest in the t'/J << 1 limit.

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页码：1232 / 1235

页数：4

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