I am not a physicist, but have always been curious about the twin paradox. So, here is my question. There are two twins in space - Twin A and Twin B (both stationary). They are apart from each other but close enough to see each other.
At first, they experience the same gravity. But, suppose that the place where Twin B is standing suddenly experiences a huge localised increase in gravity for some reason (e.g. a tiny black hole suddenly appears or passes by near Twin B), and after a few minutes, the gravity Twin B experiences will go back to the same gravity as Twin A. After that event, they can see that Twin A is aged faster than Twin B (also during that event, they see that Twin A is aging faster/twin B is aging slower).
If this is the case, then can we say that "acceleration" or changed frames of reference are not required to resolve the twin paradox? It is not about who is "accelerating" superficially, and they can be viewed as they are both in inertial frames of reference from each other's perspective... the asymmetry situation is therefore due to the changing curvature (landscape) of the space-time, not due to the "acceleration" nor due to the changed frames of reference by Twin B...
If this is so, then can we argue that this also applies to the standard story of the Twin Paradox where Twin A stays on the earth and Twin B goes off the space and come back?
Here is my follow up thought after some inputs from other people in this forum. I came to this conclusion...but let me know if I am mistaken.
I really appreciate your feedback on this to deepen my understanding on this topic.