Marshall sign and the doped t-J model

1995/06/15 by Z. Y. Weng, Zheng-Yu Weng, Weng, Z. Y. +4
Physics and Astronomy · #Condensed Matter (cond-mat) #FOS: Physical sciences #Magnetic properties of thin films #Physics of Superconductivity and Magnetism #Theoretical and Computational Physics #cond-mat

paper · pdf · doi:10.48550/arxiv.cond-mat/9506070

11 pages, RevTex, no figures

arxiv created 1995/06/15 · openalex publication_date 1995/06/15 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Marshall sign as a sole source of sign problem hidden in an antiferromagnet is explored under doping. By tracking the Marshall sign, a zero spectral weight Z is revealed in the doped antiferromagnetic system. Z=0 is caused by a phase string induced by the ``bare'' hole. By eliminating such a phase string through nonlocal transformations, a non-perturbative scheme is obtained. It is argued that this formalism provides a unique way to get access to the real ground state of the doped t-J model for both one- and two-dimensions.

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