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arXiv 1606.02771hep-thcond-mat.stat-mech
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有效的Bootstrap

The Effective Bootstrap

Alejandro Castedo Echeverri, Benedict von Harling, Marco Serone

摘要:

我们研究了使用共形引导方法获得的数值边界-在参考文献[1]中提出,但迄今为止从未实现-其中共形交比$z$和$\bar z$平面中的不同点被采样。与最常用的基于在对称点$z=\bar z =1/2$处计算的导数的方法相比,我们可以一致地“积分”出高维算子,并得到简化的更简单、更快的求解自举方程组。我们通过研究三维伊辛和$O(n)$向量模型和通用四维CFTs的边界来测试这种“有效”的引导,其中广泛的结果已经在文献中提供。我们还确定了某些标量运营商的$O(n)$矢量模型的缩放尺寸,与$n=2,3,4$,尚未使用自举技术计算。

英文摘要:

We study the numerical bounds obtained using a conformal-bootstrap method - advocated in ref. [1] but never implemented so far - where different points in the plane of conformal cross ratios $z$ and $\bar z$ are sampled. In contrast to the most used method based on derivatives evaluated at the symmetric point $z=\bar z =1/2$, we can consistently "integrate out" higher-dimensional operators and get a reduced simpler, and faster to solve, set of bootstrap equations. We test this "effective" bootstrap by studying the 3D Ising and $O(n)$ vector models and bounds on generic 4D CFTs, for which extensive results are already available in the literature. We also determine the scaling dimensions of certain scalar operators in the $O(n)$ vector models, with $n=2,3,4$, which have not yet been computed using bootstrap techniques.

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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