They've made recent discoveries regarding gravitational fields that support the Big Bang theory and are in line with what you would expect if the Big Bang had created a multiverse. http://www.scientificamerican.com/article/gravitational-wave-finding-causes-spring-cleaning-in-physics/
Jesus. That puts things into perspective. I think they are building a new and the biggest telescope in Chile soon so they will be able to see further in the future, cant wait to see what else is out there.
So even if there are an infinite number of multiverses would each one still be bound to the laws of physics? For example it would seem that no matter how many times you roll the dice you wouldn't get a living telepathic frog made of ice cream. Yet if you rolled the dice an infinite amount of times it would have to happen eventually right?
I think the general consensus is that the laws of physics are unlikely to be the same throughout the multiverse. That's one of the problems and controversial aspects with multiverse theory: how can you prove that something exists using laws of physics that might not necessarily be the same in another part of the multiverse.