格点量子色动力学模型中双星解的可能性
The possibility of twin star solutions in a model based on lattice QCD thermodynamics
摘要：
在一个受格点量子色动力学约束的有效模型中研究了致密星的性质，特别是双星解的存在性。该模型在大的重子密度进行修改，将大量的各种方案的一阶相变的退禁闭夸克的阶段。这是通过匹配袋模型状态方程的两个不同的变体来实现的，以估计袋模型参数对中子星的第二家族的出现的作用。产生的中子星序列进行了比较，从天体物理观测和引力波分析的恒星质量，半径和潮汐变形的现代约束。结果发现，大多数可能的情况不利于强相变夸克物质和不支持的猜想的第二个家庭的中子星。
英文摘要：
The properties of compact stars and in particular the existence of twin star solutions are investigated within an effective model that is constrained by lattice QCD thermodynamics. The model is modified at large baryon densities to incorporate a large variety of scenarios of first order phase transitions to a phase of deconfined quarks. This is achieved by matching two different variants of the bag model equation of state, in order to estimate the role of the Bag model parameters on the appearance of a second family of neutron stars. The produced sequences of neutron stars are compared with modern constrains on stellar masses, radii, and tidal deformability from astrophysical observations and gravitational wave analyses. It is found that most of the possible scenarios disfavor a strong phase transition to quark matter and do not support the conjecture of a second family of neutron stars.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
