arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2212.13832gr-qcastro-ph.SRhep-th
收藏

广义 SU(2) Proca 理论中的类粒子解

Particle-like solutions in the generalized SU(2) Proca theory

Jhan N. Martinez, Jose F. Rodriguez, Yeinzon Rodriguez, Gabriel Gomez

AI总结:

本文首次在天体物理尺度研究广义 SU(2) Proca 理论,发现推广 Einstein-Yang-Mills 类粒子解的静态、渐近平坦且全局正则解,揭示负有效能量密度、虚有效电荷及新全局带电解等特征,并指出可能存在稳定解。

摘要:

广义 SU(2) Proca 理论是一种矢量-张量修正引力理论,其作用量在微分同胚变换和 SU(2) 群的全局内部变换下均保持不变。本工作首次在 astrophysical 尺度上研究该理论的物理性质。我们找到了自然推广 Einstein-Yang-Mills 方程类粒子解(也称为规范玻色子星)的解。在要求解必须是静态、渐近平坦且全局正则的条件下,矢量场的 t'Hooft-Polyakov 磁单极构型成为一种可行的可能性。这些解通过渐近展开解析获得,并通过求解边值问题数值得到。我们在解中发现了新的特征,例如具有负有效能量密度和虚有效电荷的区域。我们还在理论参数空间的某些区域获得了一类新的全局带电解。此外,我们构建了平衡序列,并在某些情况下发现了转折点。这些结果暗示存在 Einstein-Yang-Mills 情形中所没有的稳定解。

英文摘要:

The generalized SU(2) Proca theory is a vector-tensor modified gravity theory where the action is invariant under both diffeomorphisms and global internal transformations of the SU(2) group. This work constitutes the first approach to investigate the physical properties of the theory at astrophysical scales. We have found solutions that naturally generalize the particle-like solutions of the Einstein-Yang-Mills equations, also known as gauge boson stars. Under the requirement that the solutions must be static, asymptotically flat, and globally regular, the t'Hooft-Polyakov magnetic monopole configuration for the vector field rises as one viable possibility. The solutions have been obtained analytically through asymptotic expansions and numerically by solving the boundary value problem. We have found new features in the solutions such as regions with negative effective energy density and imaginary effective charge. We have also obtained a new kind of globally charged solutions for some region in the parameter space of the theory. Furthermore, we have constructed equilibrium sequences and found turning points in some cases. These results hint towards the existence of stable solutions which are absent in the Einstein-Yang-Mills case.

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。

↑