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arXiv 1609.03007hep-thcond-mat.stat-mech
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$6-2ε$维中具有PDMATHAAB味对称性的$ϕ^3$理论:3-loop重整化和共形引导

$ϕ^3$ theory with $F_4$ flavor symmetry in $6-2ε$ dimensions: 3-loop renormalization and conformal bootstrap

Yi Pang, Junchen Rong, Ning Su

摘要:

我们考虑具有$F_4$整体对称性的$6-2ε$中的$ϕ^3$理论。β函数的计算多达3个循环,并观察到一个稳定的酉IR不动点。本文还计算了$ϕ$中二次和三次算子的反常维数。然后,我们采用共形引导技术研究从微扰方法预测的不动点。对于$ϕ$($Δ_ϕ)$)的每一个假定的标度维数,我们得到了出现在$ϕ\timesϕ$的OPE中的${\mathbf 26}$表示$(Δ^{\rm 2nd}_{\mathbf 26})$中次低标量原色的标度维数的相应上界.在$D=5.95$中,我们观察到位于$Δ_ϕ$处的上限曲线上的尖峰等于由3循环计算预测的值。在$D=5$中,我们在$(Δ_ϕ,Δ^{\rm 2nd}_{\mathbf 26})$ = $(1.6,4)$处观察到上限曲线上的弱扭结。

英文摘要:

We consider $ϕ^3$ theory in $6-2ε$ with $F_4$ global symmetry. The beta function is calculated up to 3 loops, and a stable unitary IR fixed point is observed. The anomalous dimensions of operators quadratic or cubic in $ϕ$ are also computed. We then employ conformal bootstrap technique to study the fixed point predicted from the perturbative approach. For each putative scaling dimension of $ϕ$ ($Δ_ϕ)$, we obtain the corresponding upper bound on the scaling dimension of the second lowest scalar primary in the ${\mathbf 26}$ representation $(Δ^{\rm 2nd}_{\mathbf 26})$ which appears in the OPE of $ϕ\timesϕ$. In $D=5.95$, we observe a sharp peak on the upper bound curve located at $Δ_ϕ$ equal to the value predicted by the 3-loop computation. In $D=5$, we observe a weak kink on the upper bound curve at $(Δ_ϕ,Δ^{\rm 2nd}_{\mathbf 26})$=$(1.6,4)$.

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