论文标题

$θ$ - 角和两色QCD的轴承物理,以固定的重骨电荷。第一部分

The $θ$-angle and axion physics of two-color QCD at fixed baryon charge. Part I

论文作者

Bersini, Jahmall, D'Alise, Alessandra, Sannino, Francesco, Torres, Matías

论文摘要

我们分析了$θ$ - 角和轴轴动力学对两种颜色的影响(实际上,在非零Baryon电荷下任何$ sp(2n)$)QCD,以及对真空特性的物质字段数量的函数,手学对称性的破坏模式以及该理论的光谱。我们表明,当理论中添加了违反拓扑操作员的基础$ cp $ cp $ cp $时,真空获得了丰富的结构。我们发现了新的阶段,并分析了它们的过渡顺序,这些过渡表征了奇怪的和偶数风味的动力学。我们进一步确定了$θ$角度的关键化学电位,将正常与理论的超流相分开。我们的结果将指导模型动力学的数值模拟和新颖的测试。预计结果还可以更好地告知该模型的现象学应用,从复合希格斯物理学到具有数字变化相互作用的强烈相互作用的大型暗物质模型。在同伴工作中\ cite {partii},我们重新利用并升级了确定$θ$ - 角和轴轴物理学对与固定巴里昂电荷部门相关的不扰动的近形式动力学的影响的方法。

We analyze the impact of the $θ$-angle and axion dynamics for two-color (in fact any $Sp(2N)$) QCD at nonzero baryon charge and as a function of the number of matter fields on the vacuum properties, the pattern of chiral symmetry breaking as well as the spectrum of the theory. We show that the vacuum acquires a rich structure when the underlying $CP$ violating topological operator is added to the theory. We discover novel phases and analyse the order of their transitions characterizing the dynamics of the odd and even number of flavours. We further determine the critical chemical potential as function of the $θ$ angle separating the normal from the superfluid phase of the theory. Our results will guide numerical simulations and novel tests of the model's dynamics. The results are also expected to better inform phenomenological applications of the model ranging from composite Higgs physics to strongly interacting massive dark matter models featuring number changing interactions. In the companion work \cite{PartII} we repurpose and upgrade the approach to determine the impact of the $θ$-angle and axion physics on non-perturbative near conformal dynamics related to the fixed baryon charge sector.

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