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arXiv 2106.16248hep-thcond-mat.str-elhep-lathep-ph
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超越标准模型的规范增强量子临界性

Gauge Enhanced Quantum Criticality Beyond the Standard Model

Juven Wang, Yi-Zhuang You

摘要:

标准知识认为我们的4D量子真空由候选标准模型(SM)之一控制,同时在更高的能量尺度上提升到某种类似大统一的结构(GUT)。相反,在我们的工作中,我们引入了另一种观点,即SM产生于量子相图中的各种邻居真空竞争。一般来说,我们认为SM发生在竞争相邻真空之间的无隙量子临界(临界点或临界区域)附近。特别是,我们证明了如何$su(3)\times su(2)\times u(1)$ SM与16 n外尔费米子附近的量子临界之间的大统一体的竞争Georgi-Pasthow(GG)$su(5)$和帕蒂萨拉姆(PS)$su(4)\times su(2)\times su(2)$。我们提出了两个包络玩具模型。模型I是一个常规的$so(10)$大统一理论,它具有自旋(10)规范群和GUT-Higgs势,引起各种Higgs跃迁。模型II修改了模型I,加上一个由GUT-Higgs场建立的4d离散扭转Wess-Zumino-Witten类项(与5d可逆拓扑场论$w_2w_3$捕获的非微扰全局混合规范-重力异常相匹配),这表明GG和PS模型之间存在超越Landau-Ginzburg临界性,在量子临界区域附近出现额外的超越标准模型(BSM)激发。如果内部对称性被视为全球对称性,我们显示了一个无间隙的4D decofined量子临界性与新的BSM细分片段激发色味分离,和规范增强,包括暗规范力部门,共需要一个双费米子自旋结构命名为DSpin。如果内部对称性动态规范,我们显示了4D边界临界,只有适当的规范增强动态大统一规范场传播到一个额外的维5D散装。这些现象可视为SM变形或形态发生。

英文摘要:

Standard lore views our 4d quantum vacuum governed by one of the candidate Standard Models (SMs), while lifting towards some Grand Unification-like structure (GUT) at higher energy scales. In contrast, in our work, we introduce an alternative view that the SM arises from various neighbor vacua competition in a quantum phase diagram. In general, we regard the SM arising near the gapless quantum criticality (either critical points or critical regions) between the competing neighbor vacua. In particular, we demonstrate how the $su(3)\times su(2)\times u(1)$ SM with 16n Weyl fermions arises near the quantum criticality between the GUT competition of Georgi-Glashow (GG) $su(5)$ and Pati-Salam (PS) $su(4)\times su(2)\times su(2)$. We propose two enveloping toy models. Model I is a conventional $so(10)$ GUT with a Spin(10) gauge group plus GUT-Higgs potential inducing various Higgs transitions. Model II modifies Model I plus a 4d discrete torsion Wess-Zumino-Witten-like term built from GUT-Higgs field (that matches a nonperturbative global mixed gauge-gravity anomaly captured by a 5d invertible topological field theory $w_2w_3$), which manifests a Beyond-Landau-Ginzburg criticality between GG and PS models, with extra Beyond-the-Standard-Model (BSM) excitations emerging near a quantum critical region. If the internal symmetries were treated as global symmetries, we show a gapless 4d deconfined quantum criticality with new BSM fractionalized fragmentary excitations of Color-Flavor separation, and gauge enhancement including a Dark Gauge force sector, altogether requiring a double fermionic Spin structure named DSpin. If the internal symmetries are dynamically gauged, we show a 4d boundary criticality such that only appropriately gauge enhanced dynamical GUT gauge fields propagate into an extra-dimensional 5d bulk. The phenomena may be regarded as SM deformation or morphogenesis.

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