Parallel universes and time travel have long been a hot topic of the Hollywood and science fiction novels and though there haven’t been any proof of such a possibility, at least some physicists believe that these two terms are not mere science fiction and there’s more to them.
Professor Howard Wiseman and Dr Michael Hall, from Griffith University’s Centre for Quantum Dynamics and Dr Dirk-Andre Deckert, from the University of California, have claimed that there is some credibility to the concept of multiverse of parallel universes and they have explained this through theory which goes against almost all conventional understanding of space and time. Further physicists also suggest that if there are multiple, interacting universes then it would be possible for time travellers to visit Earth and other such planets where life exist and every imaginable scenario would be played out in a parallel universe at some point.
The team has come up with a theory they have called the ‘Many Interacting Worlds Theory’ that brings with it a whole new perspective on the ideas underpinning quantum theory, a notoriously complex strand of physics. Wiseman says that while their theory definitely brings a whole lot of new things to the plate, the overall idea of parallel universes isn’t new to the realm of quantum mechanics as it has been around since 1957.
However, in this many-Worlds Interpretation, each universe branches into a bunch of new universes every time a quantum measurement is made. This effectively means that in this scenario, there are endless possibilities and all possibilities are therefore realised. If we translate this into understandable and worldly scenarios, there is a possibility that in some universe the dinosaurs didn’t get wiped out by the asteroid impact 66 million years ago and this caused them to continue ruling the world till today leaving possibly no room for humans to emerge at such a grand level, while in other universe, the Earth could have left barren with the asteroid impact and subsequent climate change scenarios. In some universe the British never succeeded in colonising so many countries and in some other universe, Hitler managed to do his bidding and was ruling the whole world.
Team that came up with the ‘Many Interacting Worlds’ approach says that there is a different way that they have looked at this whole multi-verse scenario. They claim that our universe is just one of many enormous worlds, with some identical to our reality and others completely different. According to this theory, all the worlds are real and all on the same timeline, but are interacting when they essentially bump into each other.
Dr Hall believes that the group’s sensational theory fits with current scientific understanding, offering a new perspective rather than rewriting the physics rule book completely. What the team says is that their theory adapts – so if there is just one world the new theory reduces to Newtonian mechanics, but if there are multiple parallel universes, the theory reproduces quantum mechanics.