论文标题
使用相对论\ textit {ab intio}探索中子星物质的通用特征}状态方程
Exploring universal characteristics of neutron star matter with relativistic \textit{ab initio} equations of state
论文作者
论文摘要
从相对论逼真的核素核定（$ nn $）相互作用开始，一种新开发的相对论\ textit {ab intibio}方法，即，在完整的dirac空间中，使用相对论的brueckner-hartree-fock（rbhf）理论，用于研究中子星形的中性星体。首先，建立了重力红移和质量的一对一对应关系，并用于推断结合重力红移测量的孤立中子星的质量。接下来，获得了惯性$ i $与$ MR^2 $的时刻的比率，这是紧凑型$ m/r $的功能，这与文献中的普遍关系一致。惯性瞬间，价格为$ 133.8亿美元\ odot $ pulsar psr j0737-3039a $ i_ {1.338m_ \ odot} $，预计为1.356 $ \ times10^{45} $，1.381 $，1.381 $ \ times10^$ \ times1010^{45} $ 1.45} $ 1.45} $ {45 \ Mathrm {g〜cm^2} $由RBHF理论在完整的Dirac空间中分别带有$ nn $互动bonn a，b和c。最后，在缓慢的旋转和小潮汐形式近似中计算中子恒星的四极矩。 RBHF理论在完整的Dirac空间中构建的状态以及通过投影方法和动量独立近似的方程式符合Universal $ i $ -love- $ Q $关系。通过梳理GW170817的潮汐变形性以及相对论\ TextIt {ab libio}方法的普遍关系，具有1.4太阳能质量的Neutron Star的惯性时刻也被推荐为$ i_ {1.4m_ \ odot} = 1.22 = 1.22^{+0.40} {+0.40} {+0.40} {+0.40} _ {-0.25} _ {-0.25} 10^{45} \ Mathrm {g \ cm^2} $。
Starting from the relativistic realistic nucleon-nucleon ($NN$) interactions, a newly developed relativistic \textit{ab initio} method, i.e., the relativistic Brueckner-Hartree-Fock (RBHF) theory in the full Dirac space is employed to study the neutron star properties. First, the one-to-one correspondence relation for gravitational redshift and mass is established and used to infer the mass of isolated neutron stars combining the gravitational redshift measurements. Next, the ratio of the moment of inertia $I$ to $MR^2$ as a function of the compactness $M/R$ is obtained, which is consistent with the universal relations in the literature. The moment of inertia for $1.338M_\odot$ pulsar PSR J0737-3039A $I_{1.338M_\odot}$ is predicted to be 1.356$\times10^{45}$, 1.381$\times10^{45}$, and $1.407\times10^{45}\ \mathrm{g~cm^2}$ by the RBHF theory in the full Dirac space with $NN$ interactions Bonn A, B, and C, respectively. Finally, the quadrupole moment of neutron star is calculated under the slow-rotation and small-tidal-deformation approximation. The equation of states constructed by the RBHF theory in the full Dirac space, together with those by the projection method and momentum-independence approximation, conform to universal $I$-Love-$Q$ relations as well. By combing the tidal deformability from GW170817 and the universal relations from relativistic \textit{ab initio} methods, the moment of inertia of neutron star with 1.4 solar mass is also deduced as $I_{1.4M_\odot}=1.22^{+0.40}_{-0.25}\times 10^{45}\mathrm{g\ cm^2}$.
