论文标题
$ f（r，t）$重力的充电夸克之星
Charged quark stars in $f(R,T)$ gravity
论文作者
论文摘要
核理论的最新进展与新的天体物理观察相结合，导致需要对实际适用于密集物理现象的特定理论模型。同时，量子染色体动力学（QCD）预测了中子星体中高密度的非核自由度的存在，例如Quark Matter。在一个由$ \ MATHCAL {O}（M_S^4）$校正的质量，中性的3味相互作用的夸克物质组成的限制夸克物质模型中，我们研究了由$ f（r，t）$ vertity的上下文中带电完美液体制成的紧凑型恒星的结构。描述带电紧凑型恒星结构的微分方程系统已被得出并在数值上求解了$ f（r，t）= r+2βT$的重力模型。为简单起见，我们假设电荷密度与能量密度成正比，即$ρ_{\ rm ch} =αρ$。证明物质几何耦合常数$β$和电荷参数$α$会影响总重力质量和恒星的半径。
Recent advances in nuclear theory combined with new astrophysical observations have led to the need for specific theoretical models that actually apply to phenomena on dense-matter physics. At the same time, quantum chromodynamics (QCD) predicts the existence of non-nucleonic degrees of freedom at high densities in neutron-star matter, such as quark matter. Within a confining quark matter model, which consists of homogeneous, neutral 3-flavor interacting quark matter with $\mathcal{O}(m_s^4)$ corrections, we study the structure of compact stars made of a charged perfect fluid in the context of $f(R,T)$ gravity. The system of differential equations that describe the structure of charged compact stars have been derived and solved numerically for a gravity model with $f(R,T)= R+ 2βT$. For simplicity, we assume that the charge density is proportional to the energy density, namely, $ρ_{\rm ch} = αρ$. It is demonstrated that matter-geometry coupling constant $β$ and the charge parameter $α$ affect the total gravitational mass and the radius of the star.
