Investigation of the ground state of the anisotropic extended Hubbard chain at weak coupling
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- 作者：Hanqin Ding ; Jun Zhang ; zhjxjuchina@163.com" class="auth_mail" title="E-mail the corresponding author
- 关键词：Ground state ; Anisotropic interaction ; Weak coupling ; Extended Hubbard chain ; Bosonization
- 刊名：Physics Letters A
- 出版年：2016
- 出版时间：23 September 2016
- 年：2016
- 卷：380
- 期：40
- 页码：3292-3296
- 全文大小：320 K
文摘
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We study the ground state of an anisotropic extended Hubbard chain at weak coupling.
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The anisotropic interactions have an important effect on the standard phase structure.
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The spin-dependent inter-site density repulsion leads to the BSDW phase.
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The inter-site AFM exchange enhances the controversial BOW phase.