论文标题
角度赤字和非本地重力电磁围绕一个缓慢旋转的宇宙弦
Angle deficit & non-local gravitoelectromagnetism around a slowly spinning cosmic string
论文作者
论文摘要
作为早期宇宙中对称性破坏阶段的残余物，宇宙弦可能容易受到非本地物理的影响。在这里，我们表明，存在庞加莱不变的非局部性 - 由因子$ \ exp（ - \ box \ ell^2）$参数化 - 使得引力场正规化，从而改变了时空的属性：现在它可以简单地连接，并且围绕宇宙范围的角度不足将成为径向距离的功能。旋转宇宙字符串的非本地引力场发生了类似的变化，我们将这些数学事实转化为非本地重力电信的语言，从而提供了物理解释。我们希望这些见解可能会证明对我们宇宙中非本地物理的痕迹有所帮助。
Cosmic strings, as remnants of the symmetry breaking phase in the Early Universe, may be susceptible to non-local physics. Here we show that the presence of a Poincaré-invariant non-locality -- parametrized by a factor $\exp(-\Box\ell^2)$ -- regularizes the gravitational field and thereby changes the properties of spacetime: it is now simply connected and the angle deficit around the cosmic string becomes a function of the radial distance. Similar changes occur for the non-local gravitomagnetic field of a rotating cosmic string, and we translate these mathematical facts into the language of non-local gravitoelectromagnetism and thereby provide a physical interpretation. We hope that these insights might prove helpful in the search for traces of non-local physics in our Universe.
