Parallel universes

Parallel universes in physics

Everett many worlds interpretation appears in quantum mechanics as a possible solution to the problem of measurement in quantum mechanics. Recently, however, has been proposed adjacent to our universes could leave an observable mark on the microwave background radiation, which would open the possibility of experimentally proving this theory.

Multiverse is a term used to define the multiple existing universes, according to hypotheses which claim that there are different from our own universes, and the different universes within the multiverse are sometimes called parallel universes.

Levels

Scientific theories of parallel universes are a hierarchy of four levels. As the level increases, the different universes differ more than ours. Thus, in the level I multiverse different universes only differ in the initial conditions even the laws of physics are different in level IV Multiverse.

In the next decade, more precise measurements of the microwave and the distribution of matter background radiation on a large scale corroborarán - or not - the level I multiverse since they will determine the topology and curvature of space. At the same time, they also indagarán level II by testing the theory of eternal chaotic inflation. In terms of the exploration of the level III multiverse, the possible construction in the future of quantum computers can play a crucial role in this regard. Finally, the success or failure of the theory at all - it grouped all physical phenomena in a single theory - allow take or not split by level IV.

Level I multiverse

They would be different (universes) bubbles that vary only in the initial conditions.

Multiverse of level II

In the multiverse of level II the different bubbles (universes) vary not only in their initial conditions but in such aspects as the dimensions of spacetime, the qualities of the elementary particles and the values that take the physical constants. Different bubbles may experience different spontaneous symmetry breaking, which translates in universes of disparate properties.

Level III multiverse

One interesting consequence of a level III multiverse is how this affects the nature of time. While it is traditionally considered that time is a way of describing the changes, the existence of parallel worlds that encompass all possible configurations of matter, redefine the time as a way to sequence these different universes. Universes in themselves are static, the change being a mere illusion.

Level IV multiverse

The level IV multiverse considers that all mathematical structures also exist physically. This level therefore posits the existence of all the universes that can be defined by mathematical structures. Residing outside of space and time, the majority of them are empty of observers. In this way, while in the multiverse of level I, level II and level III conditional initials and physical constants vary fundamental laws remaining unchanged, in the multiverse of level IV these last also change.

Parallel universes in the travel in time

The existence of parallel universes in the travel in time, simplify solutions to the possible temporal paradoxes resulting from travel to the past, in a temporary line, and make changes to modify the future status. In such a way that there is the possibility to travel horizontally to other parallel universes where would have other timelines. But for now all are theories.