论文标题
旋转进度是变成非正式标量字段的新窗口
Spin precession as a new window into disformal scalar fields
论文作者
论文摘要
我们首次调查了光标量场如何结合和非正式地耦合到物质，从而影响旋转点状身体的演变。我们直接在运动方程水平上工作，我们得出了新型的自旋轨道和自旋旋转效应，以准确地在非遗体和弱场扩张中领先顺序。至关重要的是，与由于旋转对称性引起的圆形二进制偶联所引起的自旋依赖性效应不同，我们在这里研究的旋转依赖性效应即使在零偏心率的极限上也存在，因此提供了一种新的和有性上不同的相互作用方式。为了说明它们的潜力，我们通过重力探针B实验的自旋细分测量来面对我们的预测，并发现所产生的约束在近调围层进动的现有界限上提高了5个数量级。因此，我们的结果将旋转效应作为一个有希望的窗口建立了，进入了异常耦合的黑暗部门。
We launch a first investigation into how a light scalar field coupled both conformally and disformally to matter influences the evolution of spinning point-like bodies. Working directly at the level of the equations of motion, we derive novel spin-orbit and spin-spin effects accurate to leading order in a nonrelativistic and weak-field expansion. Crucially, unlike the spin-independent effects induced by the disformal coupling, which have been shown to vanish in circular binaries due to rotational symmetry, the spin-dependent effects we study here persist even in the limit of zero eccentricity, and so provide a new and qualitatively distinct way of probing these kinds of interactions. To illustrate their potential, we confront our predictions with spin-precession measurements from the Gravity Probe B experiment and find that the resulting constraint improves upon existing bounds from perihelion precession by over 5 orders of magnitude. Our results therefore establish spin effects as a promising window into the disformally coupled dark sector.
