论文标题
能量非传播和相对论轨迹：单模型的重力及以后
Energy nonconservation and relativistic trajectories: Unimodular gravity and beyond
论文作者
论文摘要
节能具有基本物理原理的地位。但是，量子力学的测量不符合节能。因此，预计更基本的重力理论（与量子力学不矛盾的理论）应接受能量不守恒。本文首先确定理论具有不能保守的能量量张量的条件。然后，得出了失去能量的尖粒粒子的轨迹方程，这表明能量不传播会产生特定的加速度。例如，研究了重力理论。有趣的是，在球形对称性中，鉴于有广义的birkhoff定理，并且能量量张量的差异是一种封闭形式，因此可以使用知名的方法可以找到失去能量的测试粒子的轨迹。最后，使用太阳系观测值设置了能量非保守参数的限制。
Energy conservation has the status of a fundamental physical principle. However, measurements in quantum mechanics do not comply with energy conservation. Therefore, it is expected that a more fundamental theory of gravity -- one that is less incompatible with quantum mechanics -- should admit energy nonconservations. This paper begins by identifying the conditions for a theory to have an energy-momentum tensor that is not conserved. Then, the trajectory equation for pointlike particles that lose energy is derived, showing that energy nonconservation produces a particular acceleration. As an example, the unimodular theory of gravity is studied. Interestingly, in spherical symmetry, given that there is a generalized Birkhoff theorem and that the energy-momentum tensor divergence is a closed form, the trajectories of test particles that lose energy can be found using well known methods. Finally, limits on the energy nonconservation parameters are set using Solar system observations.
