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

Department of Physics

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English
Article number	106119
Journal	Results in Physics
Volume	44
DOIs	https://doi.org/10.1016/j.rinp.2022.106119
Publication status	Published - 2023 Jan

Keywords

Quantum Monte Carlo
Quantum critical regime
Spin-wave velocity
Uniform susceptibility

ASJC Scopus subject areas

General Physics and Astronomy

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10.1016/j.rinp.2022.106119

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title = "The numerical value for a universal quantity of a two-dimensional dimerized quantum antiferromagnet",

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.",

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year = "2023",

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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

Abstract

Keywords

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