Are multiverses real according to Buddhism
31 Planes of existence coming together is one universe. There are infinite similar universes according to the Abhidhamma. This may be similar to multiverse but unlike in Sci Fi there are no duplicates of beings and duplication of events as per my understanding. Generally rebirth is within the universe but there are times beings can be reborn in intergalactic space / hell which are the coldest places every. Such being may end up in other universes. The universe we live in is a lucky place since it is here a Buddha appears. So only the lucky beings inhabit this universe through there are infinite such being in the universe. There are infinite being in each universe. The cycles of creation and destruction in each universe may not be the same as in such universes may not be habitable. Generally I would believe even with psychic powers you may not know the bounds of the universe of see beyond this universe. Perhaps only The Buddha and a few of the great disciples may have managed to do this.