请问正物质世界和反物质世界用什么办法隔离?

应该就是黑洞。
那是连接宇宙与反宇宙的通道。
其中并没有真正意义上的“物质”。
而在这种虚无之中可以将正反物质相互转换。
所以，我们的宇宙才不会崩溃。

只是可能而已,还没有发现这个世界……所以………………黑洞？………………

Actually there is no evidence so far to show that the antimatter world exists.Matter is much much more than antimatter that we can almost ignore antimatter. The question:" why matter is so much more than antimatter?" is one of the most fundemental questions of particle physics.
If there is an antimatter world, in the cross section, matter and antimatter would disappear together and send out photons. But we never see this happening.

交界是虚（正或反）粒子吧``

这个问题目前为止没办法解决