system
Given the following post, respond as if you're commenting on Reddit:
human
Bremsstrahlung and General Relativity: Does a charge resting on the surface of earth emit radiation?


The Standard Model treats gravity as a force like any other while General Relativity models gravity not as a force, but as the curvature of spacetime. 

A consequence of the latter is, that free-falling objects are force-free and their acceleration, defined as the covariant derivative of their four-velocity, is zero. 

Furthermore, it follows that objects at rest relative to the surface of a planet are constantly being accelerated upwards by the ground, according to GR. 

Does this fact constitute an experiment so see which model is correct regarding their model of gravitation? 

* If gravity is a force, free falling charged particles are being accelerated, and should therefore emit radiation. Conversely, charges at rest relative to the ground experience a net-force of 0N and should not emit radiation. 

* If gravity is the curvature of spacetime, free-falling charges do not experience forces, and should therefore not emit radiation, while charges at rest relative to the ground are being accelerated upwards and should emit radiation. 

Am I missing something here? Can we detect Bremsstrahlung in either of the above cases?
gpt
It depends on the frame of reference. A charge at rest on the Earth does not appear to radiate as seen by other at-rest observers on the Earth, but a freefalling observer would see a charge-at-rest radiate.