How is a local universe created. In my opinion a dying universe is, over a period of billions of years, sucked in by gravity into a black hole. Eventually when the black hole has consumed a whole galaxy, or more (including any other minor black holes in its territory) it reaches critical compression and explodes and a new local universe is born. The physics of that new local universe are created at the moment of the explosion and are not necessarily the same physics which we could recognise