...
首页> 外文期刊>Physical review, C >Hyperon stars in a modified quark meson coupling model
【24h】

Hyperon stars in a modified quark meson coupling model

机译:修改夸克中蒙诗耦合模型中的高速恒星

获取原文
获取原文并翻译 | 示例
           

摘要

We determine the equation of state (EOS) of nuclear matter with the inclusion of hyperons in a self-consistent manner by using a modified quark meson coupling model where the confining interaction for quarks inside a baryon is represented by a phenomenological average potential in an equally mixed scalar-vector harmonic form. The hadron-hadron interaction in nuclear matter is then realized by introducing additional quark couplings to sigma, omega and rho mesons through mean-field approximations. The effect of a nonlinear omega-rho term on the EOS is studied. The hyperon couplings are fixed from the optical potential values and the mass-radius curve is determined satisfying the maximum mass constraint of 2 M-circle dot for neutron stars, as determined in recent measurements of the pulsar PSR J0348+0432. We also observe that there is no significant advantage of introducing the nonlinear omega-rho term in the context of obtaining the star mass constraint in the present set of parametrizations.
机译:我们通过使用修改的夸克迈尔森耦合模型将超声确定核问题的状态(EOS)方程(EOS),其中通过修改Quark MESON耦合模型,其中B序内的夸克的限制相互作用是在同样的现象学平均潜力所代表的混合标量矢量谐波形式。通过平均场近似将额外的夸克联轴器引入σ,ω和rho介子来实现核物质的Holron-Holron相互作用。研究了非线性ω-rho术语对eos上的影响。从光学电位值固定超谐振耦合,并确定质量半径曲线,以满足中子恒星的2 M圆点数的最大质量约束,如脉冲节PSR J0348 + 0432的最近测量所确定的。我们还观察到,在获得本发明的参数化中的星形质量约束的上下文中引入非线性ω-Rho术语没有显着优点。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号