Using the average spectrum method to extract dynamics from quantum Monte Carlo simulations

Article

关键词: HEISENBERG-ANTIFERROMAGNET;    ANALYTIC CONTINUATION;    MAGNON DISPERSION;    SPIN;    EXCITATIONS;    RENORMALIZATION;    EXPANSIONS;    WAVES;    GAP;    2D;   

DOI  :  10.1103/PhysRevB.78.174429

来源: SCIE

【 摘 要 】

We apply the average spectrum method to the problem of getting the excitation spectrum from imaginary-time quantum Monte Carlo (QMC) simulations. We show that with high-quality QMC data this method reproduces the dominant spectral features very well. It is also capable in giving information on the spectrum in regions dominated by the many-particle continuum of excitations.

【 授权许可】

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