Systematic analysis of crystalline phases in bosonic lattice models with algebraically decaying density-density interactions

We propose a general approach to analyse diagonal ordering patterns in bosonic lattice models with algebraically decaying density-density interactions on arbitrary lattices. The key idea is a systematic search for the energetically best order on all unit cells of the lattice up to a given extent....

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Main Author: Jan A. Koziol, Antonia Duft, Giovanna Morigi, Kai P. Schmidt
Format: Article
Language:English
Published: SciPost 2023-05-01
Series:SciPost Physics
Online Access:https://scipost.org/SciPostPhys.14.5.136
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author Jan A. Koziol, Antonia Duft, Giovanna Morigi, Kai P. Schmidt
author_facet Jan A. Koziol, Antonia Duft, Giovanna Morigi, Kai P. Schmidt
author_sort Jan A. Koziol, Antonia Duft, Giovanna Morigi, Kai P. Schmidt
collection DOAJ
description We propose a general approach to analyse diagonal ordering patterns in bosonic lattice models with algebraically decaying density-density interactions on arbitrary lattices. The key idea is a systematic search for the energetically best order on all unit cells of the lattice up to a given extent. Using resummed couplings we evaluate the energy of the ordering patterns in the thermodynamic limit using finite unit cells. We apply the proposed approach to the atomic limit of the extended Bose-Hubbard model on the triangular lattice at fillings $f=1/2$ and $f=1$. We investigate the ground-state properties of the antiferromagnetic long-range Ising model on the triangular lattice and determine a six-fold degenerate plain-stripe phase to be the ground state for finite decay exponents. We also probe the classical limit of the Fendley-Sengupta-Sachdev model describing Rydberg atom arrays. We focus on arrangements where the atoms are placed on the sites or links of the Kagome lattice. Our method provides a general framework to treat cristalline structures resulting from long-range interactions.
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spelling doaj.art-f893ff82cc144f249c4e3009de7fefb72023-05-30T14:25:06ZengSciPostSciPost Physics2542-46532023-05-0114513610.21468/SciPostPhys.14.5.136Systematic analysis of crystalline phases in bosonic lattice models with algebraically decaying density-density interactionsJan A. Koziol, Antonia Duft, Giovanna Morigi, Kai P. SchmidtWe propose a general approach to analyse diagonal ordering patterns in bosonic lattice models with algebraically decaying density-density interactions on arbitrary lattices. The key idea is a systematic search for the energetically best order on all unit cells of the lattice up to a given extent. Using resummed couplings we evaluate the energy of the ordering patterns in the thermodynamic limit using finite unit cells. We apply the proposed approach to the atomic limit of the extended Bose-Hubbard model on the triangular lattice at fillings $f=1/2$ and $f=1$. We investigate the ground-state properties of the antiferromagnetic long-range Ising model on the triangular lattice and determine a six-fold degenerate plain-stripe phase to be the ground state for finite decay exponents. We also probe the classical limit of the Fendley-Sengupta-Sachdev model describing Rydberg atom arrays. We focus on arrangements where the atoms are placed on the sites or links of the Kagome lattice. Our method provides a general framework to treat cristalline structures resulting from long-range interactions.https://scipost.org/SciPostPhys.14.5.136
spellingShingle Jan A. Koziol, Antonia Duft, Giovanna Morigi, Kai P. Schmidt
Systematic analysis of crystalline phases in bosonic lattice models with algebraically decaying density-density interactions
SciPost Physics
title Systematic analysis of crystalline phases in bosonic lattice models with algebraically decaying density-density interactions
title_full Systematic analysis of crystalline phases in bosonic lattice models with algebraically decaying density-density interactions
title_fullStr Systematic analysis of crystalline phases in bosonic lattice models with algebraically decaying density-density interactions
title_full_unstemmed Systematic analysis of crystalline phases in bosonic lattice models with algebraically decaying density-density interactions
title_short Systematic analysis of crystalline phases in bosonic lattice models with algebraically decaying density-density interactions
title_sort systematic analysis of crystalline phases in bosonic lattice models with algebraically decaying density density interactions
url https://scipost.org/SciPostPhys.14.5.136
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