Say our universe is a bubble . And there ’s another world in another house of cards . researcher have feign what it would look like if the two house of cards happen against each other , and their piece of work could reveal the telltale signs of colliding universes – indicate that themultiversetheoryisn’t just a wild idea , but a testable hypothesis .
“ We ’re hear to find out what the testable predictions of this picture would be , and then going out and seem for them,”Matthew Johnson from the Perimeter Institutesays in anews vent . “ We ’re now able-bodied to say that some model predict something that we should be capable to see , and since we do n’t in fact see it , we can rule those exemplar out . ”
To put multiverse theory to the trial , Johnson and colleagues suppose the simplest kind of multiple universe apparatus – one in which our universe map one of two such bubble . Their inquiry models what would befall if those two existence collided , and what that collision might look like to astronomers here on Earth .
Making a mannikin of everything there ever was sounds like a marvelous order . But not so ! “ Simulating the universe is easy,”Johnson says . Because they ’re process on the large scale , they did n’t have to account for every particle , every whizz , or every wandflower – in fact , they accounted for none of them . “ All I need is gravity and the stuff that makes these house of cards up , ” he adds .
After colliding the bubbles on a computer , they stick a virtual observer in various places and ask what that observer would see from there . For case , two colliding bubble would pass on a record on the sky : a circular contusion in the cosmic microwave oven background . Because the search for such a disk has come up empty so far , researcher are able to prevail out certain hit - fill framework .
The team is presently essay to calculate out what other observable traces a bubble collision would impart behind . While none of those signatures have been find so far , some of them are at least possible to look for .
Theworkwas print inJournal of Cosmology and Astroparticle Physics . reckon at all the bubbles in this video !
