There is no consensus as there is no actual scientific theory or observation that even deals with multiverse ideas. Multiverse ideas are more of the realm of speculative philosophy than physics. Many prominent scientists talk publicly about multiverse ideas, but you must realize that what they are saying is more of philosophical opinion than actual science. Other universes are by definition outside of our observation and therefore outside of science, which depends crucially on observation for validation. Being not an actual science, there is no way for multiverse ideas to form part of a consensus. It's like asking physicists to form a consensus on the tastiness of Thai food. It might be a fun exercise, but is scientifically pointless.

I don't know the percentages, but a large number of physicists accept a multiverse because it is a logical conclusion to be drawn from the Inflationary Universe Theory. Recent gravity measurements by the Planck Telescope satellite has some physicists believing that they have evidence that it exists.

http://www.bbc.co.uk/news/science-environment-1437...

Nom Multiverse therory is not right.