论文标题
紧凑型恒星物质的比例对称性和组成
Scale symmetry and composition of compact star matter
论文作者
论文摘要
通过使用Skyrmion晶体方法研究密集的紧凑型星形物质。使用的手性有效理论包括最轻的标量介子，最低的载体介子和乳头。在高密度下与矢量表现和DILATON极限固定点的一致性限制了Gluon场的异常尺寸$ 1.0 \ sillsim | lisesim |γ_{g^2} | \ Lessim 2.0 $，并导致量表对称性破坏在有效理论的内在奇偶校验中的重要性。声音$ v_s^2 \ simeq 1/3 $和多粒子索引$γ\ simeq 1 $的速度 - 都满足保形限制 - 在高密度的Dilaton极限固定点之后，但此事仍处于HADRONES阶段。这意味着声音的保形速度或多粒子指数的较小都不能用作夸克物质发作的标准。这些结论对于构建核物质状态方程是重要的。
The dense compact star matter is studied by using the skyrmion crystal approach. The chiral effective theory used includes the lightest scalar meson, the lowest-lying vector mesons as well as pions. Consistency with the vector manifestation and the dilaton limit fixed point at high density constrains the anomalous dimension of the gluon field $1.0 \lesssim |γ_{G^2}| \lesssim 2.0$ and leads to the significance of the scale symmetry breaking in the intrinsic parity-odd part of the effective theory. The speed of sound $v_s^2 \simeq 1/3$ and the polytropic index $γ\simeq 1$ -- both satisfy the conformal limits -- after the dilaton limit fixed point at high density but the matter is still in the hadronic phase. This means that neither the conformal speed of sound nor the smallness of the polytropic index can be used as a criterion of the onset of quark matter. These conclusions are significant for constructing the equation of state of nuclear matter.
