标题： 带有 ω 和 ρ 向量介子的夸克 - 介子模型的函数重正化群研究 显示英文标题

标题： Functional renormalization group study of the quark-meson model with omega and rho vector mesons

摘要： 我们采用函数重正化群流方程来研究具有有限同位旋化学势的两味夸克 - 介子模型的相结构，并纳入与 ω 和 ρ 向量介子的相互作用。 为了比较，我们还使用平均场近似计算了手征极限下的相图。 我们的发现表明，ω 和 ρ 介子以明显不同的方式影响相结构，并且引入同位旋化学势会导致相边界和临界区域发生显著变化。 增加同位旋化学势会降低三临界点的温度，并倾向于抑制低温度下 FRG 相边界的非物理“反向弯曲”。 显示英文摘要

摘要： We employ the functional renormalization group flow equations to investigate the phase structure of the two-flavor quark-meson model in the presence of a finite isospin chemical potential, incorporating interactions with omega and rho vector mesons. For comparison, we also compute the phase diagram in the chiral limit using the mean-field approximation. Our findings demonstrate that omega and rho mesons affect the phase structure in markedly distinct ways, and the introduction of an isospin chemical potential leads to significant modifications in the phase boundaries and critical region. Increasing the isospin chemical potential lowers the tricritical points temperature, and tends to suppress the unphysical ``back-bending" of the FRG phase boundary at low temperature.