Ground-state properties of the one-dimensional unconstrained pseudo-anyon Hubbard model

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Zhang, W.; Greschner, S.; Fan, E.; Scott, T.C.; Zhang, Y.: Ground-state properties of the one-dimensional unconstrained pseudo-anyon Hubbard model. In: Physical Review A 95 (2017), Nr. 5, No. 53614. DOI: https://doi.org/10.1103/PhysRevA.95.053614

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Sum total of downloads: 133




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Abstract: 
We study the (pseudo-) anyon Hubbard model on a one-dimensional lattice without the presence of a three-body hardcore constraint. In particular, for the pseudo-fermion limit of a large statistical angle θ ≈ π, we observe a wealth of exotic properties, including a first-order transition between different superfluid phases and a two-component partially paired phase for large fillings without need of an additional three-body hardcore constraint. In this limit, we analyze the effect of an induced hardcore constraint, which leads to the stabilization of superfluid ground states for vanishing or even small attractive onsite interactions. For finite statistical angles, we study the unconventional broken-symmetry superfluid peaked at a finite momentum, resulting in an interesting beat phenomenon of single-particle correlation functions. We show how some features of various ground-state phases, including an analog of the partially paired phase in the pseudo-fermion limit, may be reproduced in a naive mean field frame. © 2017 American Physical Society.
License of this version: Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden.
Document Type: Article
Publishing status: publishedVersion
Issue Date: 2017
Appears in Collections:Fakultät für Mathematik und Physik

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pos. country downloads
total perc.
1 image of flag of Germany Germany 82 61.65%
2 image of flag of United States United States 25 18.80%
3 image of flag of China China 11 8.27%
4 image of flag of Japan Japan 2 1.50%
5 image of flag of Ireland Ireland 2 1.50%
6 image of flag of Iran, Islamic Republic of Iran, Islamic Republic of 1 0.75%
7 image of flag of Indonesia Indonesia 1 0.75%
8 image of flag of Hungary Hungary 1 0.75%
9 image of flag of United Kingdom United Kingdom 1 0.75%
10 image of flag of Austria Austria 1 0.75%
    other countries 6 4.51%

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