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arXiv 2201.05990cond-mat.str-el
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动量空间泛函重整化群的参考结果

Reference results for the momentum space functional renormalization group

Jacob Beyer, Jonas B. Profe, Lennart Klebl

AI总结:

本文给出动量空间FRG的明确实现细节与达到机器精度的三重独立复现数值,并审查文献关键结果,旨在建立可共享的FRG基准参考标准。

摘要:

泛函重整化群(FRG)是研究量子多体现象的一种成熟计算方法,其在主题应用、解析近似和数值实现方面已呈现多样化。尽管人们为通过基准测试和复现先前结果来建立统一标准付出了巨大努力,但迄今为止尚未有系统、全面的比较。虽然这并未阻碍相关科学成果的发表,但我们认为,不同实现之间确立的相互一致将增强人们对该方法的信心。为此,我们报告了明确的实现细节和数值数据,这些结果在三个独立的FRG实现中得到复现,并达到机器精度。为证实我们计算的可复现性,我们仔细审查了文献中报道的支柱性FRG结果,并讨论了我们对这些参考系统的计算。我们意在吸引其他研究组复现并确立这组FRG基准结果,从而推动FRG社区共同努力,建设一个共享知识库,作为FRG实现的参考标准。

英文摘要:

The functional renormalization group (FRG), an established computational method for quantum many-body phenomena, has been subject to a diversification in topical applications, analytic approximations and numerical implementations. Despite significant efforts to accomplish a coherent standard through benchmarks and the reproduction of previous results, no systematic and comprehensive comparison has been provided until now. While this has not prevented the publication of relevant scientific results we argue that established mutual agreement across realizations will strengthen confidence in the method. To this end we report explicit implementational details and numerical data reproduced thrice in independent FRG implementations up to machine accuracy. To substantiate the reproducibility of our calculations we scrutinize pillar FRG results reported in the literature, and discuss our calculations of these reference systems. We mean to entice other groups to reproduce and establish this set of benchmark FRG results thus propagating the joint effort of the FRG community to engage in a shared knowledge repository as a reference standard for FRG implementations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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