利用大 $N_c$ 标准 U(3) 纠缠perturbation理论输入在壳重整化夸克-介子模型中获得改进的左手极限研究结果
Improved results of chiral limit study with the large $N_c$ standard U(3) ChPT inputs in the on-shell renormalized quark-meson model
AI总结:
利用大 $N_c$ 标准 U(3) ChPT 输入改进了在壳重整化夸克-介子模型中对左手极限的研究。
摘要:
当使用大 $N_{c}$ 标准 U(3) 纠缠perturbation理论(ChPT)和红外正则化 U(3) ChPT 中由 $(m_π,m_{K})$ 依赖的缩放关系给出的 $f_π, f_{K} \text{ and } M_η^2$ 在壳重整化 2+1 味夸克-介子(RQM)模型中寻找其参数,以接近左手极限 $(m_π,m_{K}) \rightarrow 0$ 远离物理点 $ (m_π^{\text{\tiny{Phys}}},m_{K}^{\text{\tiny{Phys}}})=(138,496) $ MeV 的路径时,会得到 RQM-S 模型和 RQM-I 模型各自的框架。计算并综合比较 RQM-S 和 I 模型的哥伦比亚图,对于 $m_σ=400,500\text{ and }600$ MeV,已显示使用大 $N_c$ 标准 U(3) ChPT 输入为 Chiral 极限研究提供了更好的框架,因为 RQM-S 模型的三临界线在所有 $m_σ$ 情况下在垂直介子(夸克)质量 $μ-m_{K}$ ($μ-m_{s}$) 平面上变得平坦后显示出预期的饱和模式,而 RQM-I 模型的三临界线在 $m_σ=500$ MeV 时变得发散,当 $m_σ=600$ MeV 时变得强烈发散。
英文摘要:
When the $f_π, f_{K} \text{ and } M_η^2$ given by the $ (m_π,m_{K}) $ dependent scaling relations of the large $N_{c}$ standard U(3) Chiral perturbation theory (ChPT) and the infrared regularized U(3) ChPT,~are used in the on-shell renormalized 2+1 flavor quark-meson (RQM) model to find its parameters in the path to the chiral limit $(m_π,m_{K}) \rightarrow 0$ away from the physical point $ (m_π^{\text{\tiny{Phys}}},m_{K}^{\text{\tiny{Phys}}})=(138,496) $ MeV,~one gets the respective framework of RQM-S model and RQM-I model.~Computing and comprehensively comparing the RQM-S and I model Columbia plots for the $m_σ=400,500\text{ and }600$ MeV,~it has been shown that the use of large $N_c$ standard U(3) ChPT inputs give the better and improved framework for the Chiral limit studies as the RQM-S model tricritical lines show the expected saturation pattern after becoming flat in the vertical meson (quark) mass $μ-m_{K}$ ($μ-m_{s}$) plane for all the cases of $m_σ$ whereas the divergent RQM-I model tricritical line for the $m_σ=500$ MeV becomes strongly divergent when the $m_σ=600$ MeV.
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