The numerical value for a universal quantity of a two-dimensional dimerized quantum antiferromagnet

Fu Jiun Jiang

doi:10.1016/j.rinp.2022.106119

The numerical value for a universal quantity of a two-dimensional dimerized quantum antiferromagnet

Fu Jiun Jiang

物理學系

研究成果: 雜誌貢獻 › 期刊論文 › 同行評審

摘要

The numerical value of a universal quantity associated with the quantum critical regime, namely χ_uc²/T, for a two-dimensional (2D) dimerized spin-1/2 antiferromagnet is calculated using the quantum Monte Carlo simulations (QMC). Here χ_u, c, and T are the uniform susceptibility, the spin-wave velocity, and the temperature, respectively. By simulating large lattices at moderately low temperatures, we find χ_uc²/T∼0.32. Our estimation of χ_uc²/T deviates from the related analytic prediction but agrees with recent numerical calculations of other 2D dimerized spin-1/2 antiferromagnets.

原文	英語
文章編號	106119
期刊	Results in Physics
卷	44
DOIs	https://doi.org/10.1016/j.rinp.2022.106119
出版狀態	已發佈 - 2023 1月

ASJC Scopus subject areas

一般物理與天文學

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10.1016/j.rinp.2022.106119

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abstract = "The numerical value of a universal quantity associated with the quantum critical regime, namely χuc2/T, for a two-dimensional (2D) dimerized spin-1/2 antiferromagnet is calculated using the quantum Monte Carlo simulations (QMC). Here χu, c, and T are the uniform susceptibility, the spin-wave velocity, and the temperature, respectively. By simulating large lattices at moderately low temperatures, we find χuc2/T∼0.32. Our estimation of χuc2/T deviates from the related analytic prediction but agrees with recent numerical calculations of other 2D dimerized spin-1/2 antiferromagnets.",

keywords = "Quantum Monte Carlo, Quantum critical regime, Spin-wave velocity, Uniform susceptibility",

author = "Jiang, {Fu Jiun}",

note = "Publisher Copyright: {\textcopyright} 2022 The Author(s)",

year = "2023",

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doi = "10.1016/j.rinp.2022.106119",

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N2 - The numerical value of a universal quantity associated with the quantum critical regime, namely χuc2/T, for a two-dimensional (2D) dimerized spin-1/2 antiferromagnet is calculated using the quantum Monte Carlo simulations (QMC). Here χu, c, and T are the uniform susceptibility, the spin-wave velocity, and the temperature, respectively. By simulating large lattices at moderately low temperatures, we find χuc2/T∼0.32. Our estimation of χuc2/T deviates from the related analytic prediction but agrees with recent numerical calculations of other 2D dimerized spin-1/2 antiferromagnets.

AB - The numerical value of a universal quantity associated with the quantum critical regime, namely χuc2/T, for a two-dimensional (2D) dimerized spin-1/2 antiferromagnet is calculated using the quantum Monte Carlo simulations (QMC). Here χu, c, and T are the uniform susceptibility, the spin-wave velocity, and the temperature, respectively. By simulating large lattices at moderately low temperatures, we find χuc2/T∼0.32. Our estimation of χuc2/T deviates from the related analytic prediction but agrees with recent numerical calculations of other 2D dimerized spin-1/2 antiferromagnets.

KW - Quantum Monte Carlo

KW - Quantum critical regime

KW - Spin-wave velocity

KW - Uniform susceptibility

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The numerical value for a universal quantity of a two-dimensional dimerized quantum antiferromagnet

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