Do you know what parallel universes are and if they really exist

Picture of parallel universes.
Many people think that our universe may be part of a multiverse, but how close are we to discovering parallel universes?

Parallel universes are those alternative realities which allow for the existence of several relatively independent universes.

In 2007, Aurélien Barrau, a physicist at the Laboratory of Subatomic Physics and Cosmology in Grenoble, stated that "there are good reasons to seriously consider the interpretation of many worlds".

What are parallel universes?

A curious interpretation of parallel universes or a different world is the Schrödinger's cat paradox.

In the experiment, carried out in the year 1935, a cat was enclosed in an opaque box with poison. The animal had a 50% chance of living or dying, before the box was opened by the observer, who would "collapse" the system and determine one option or the other.

If parallel universes exist, physicists say, neither of these two options would be any truer than the other: the cat would still be alive in one universe, but would be dead in the parallel universe.

Picture of Many worlds theory bubbels.
Parallel universes can exist in several different ways. One of the more popular theories is the "many worlds" theory of quantum mechanics.

This would generate a third option, completely counterintuitive, which would make it possible to explain paradoxical questions that arise in quantum mechanics.

Barrau explains that, quantum physics is probably among the first branches of Physics that have led to this idea of the multiverse, a term that describes the possibility that these parallel universes exist.

Researchers from the Griffith Centre for Quantum Dynamics, at the University itself, in Australia, propose a radical approach: they claim that parallel universes not only exist, but also interact with each other, influencing each other by a subtle force of repulsion.

The researchers believe that these universes, instead of evolving independently, condition each other.

Michael Hall, a member of a group of researchers at the Perimeter Institute of Theoretical Physics in Canada, argues that all these worlds are real, that they exist permanently and that they possess very precise properties.

Hall has called his theory "Many Worlds in Interaction" (Many-Interacting Worlds) which could prove the existence of other worlds. For now, they are trying to do so by means of computer simulations.

According to Barrau's words, the idea of multiple universes can be misleading and probably the discovery of the most fundamental laws of physics will make parallel universes obsolete in a few years, or that with the multiverse science in general is entering a path of no return.

In all the foreseen possibilities, the most important thing is caution. It is likely that we will be faced with a profound paradigm shift that will revolutionize our understanding of nature and open up new fields of scientific thought.

There are at least five theories about why a multiverse is possible

  • 1. Infinite universes.
  • 2. Bubble universes.
  • 3. Daughter universes.
  • 4. Mathematical universes.
  • 5. Parallel universes.