Twin paradox in curved spacetime

The twin paradox has played an important role in the history of special relativity (SR). A precise calculation would require application general theory (GR) but, neglecting acceleration phases traveling twin, even SR it is possible to find correct solution without logical contradictions. Nowadays well known that thought experiment seems a as consequence naive time dilation and principle relativity. who goes on space travel one who, returning at rest, finds aged brother. Continuing this pedagogical tradition, we want add further consideration. In fact, always been explained by considering two twins immersed Minkowski’s spacetime. It could be interesting, from didactic point view, analyze same Earth’s gravitational field. Indeed, under certain conditions, may happen brother can grow older than his rest.