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arXiv 1605.04052hep-thhep-lat
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格上共形多味QCD的Bootstrap界

Bootstrap bound for conformal multi-flavor QCD on lattice

Yu Nakayama

摘要:

Iha等人的工作在假设重正化群不动点可以用基于交错费米子的格点正则化实现的前提下,从$SU(N_F)_V$对称共形场论的共形引导得到了重正化群不动点处多味无质量QCD的质量反常维数$γ_m$的上界.通过研究$SU(N_f)_L \times SU(N_f)_R$对称共形场论中的共形引导,我们发现几乎相同但稍强的约束适用于基于Wilson费米子(或畴壁费米子)的正则化.对于$N_f=8$,我们的界限意味着$γ_m < 1.31$,以避免与晶格对称性不兼容的危险的不相关运算符。

英文摘要:

The recent work by Iha et al shows an upper bound on mass anomalous dimension $γ_m$ of multi-flavor massless QCD at the renormalization group fixed point from the conformal bootstrap in $SU(N_F)_V$ symmetric conformal field theories under the assumption that the fixed point is realizable with the lattice regularization based on staggered fermions. We show that the almost identical but slightly stronger bound applies to the regularization based on Wilson fermions (or domain wall fermions) by studying the conformal bootstrap in $SU(N_f)_L \times SU(N_f)_R$ symmetric conformal field theories. For $N_f=8$, our bound implies $γ_m < 1.31$ to avoid dangerously irrelevant operators that are not compatible with the lattice symmetry.

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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