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arXiv 0811.2037hep-lat
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大晶格间距下有效展开的连续统标度

Continuum scaling in expansions effective at a large lattice spacing

Hirofumi Yamada

摘要:

研究了格点上Delta展开的一类新的截断格式。我们表明,作为伸缩参数引入的δ中的膨胀的阶可以取足够大,并且结果引起关于晶格模型中的相关变量的Borel变换。研究了非谐振子、大N时d=2非线性西格玛模型和Wilson费米子Gross-Neveu模型中大间距有效展开的连续标度的显式模拟.

英文摘要:

A new class of truncation schemes of delta expansion on the lattice is studied. We show that the order of expansion in delta which is introduced as the dilation parameter can be taken large enough and the result gives rise to the Borel transformation with respect to the relevant variable in the lattice models. The explicit simulation of the continuum scaling from the expansion effective at large spacings is investigated in anharmonic oscillators, d=2 non-linear sigma model at large N and Gross-Neveu model with Wilson fermions.

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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