There could be an infinitely incomprehensible number of worlds and realms hidden beyond our human limitations of understanding- dimensions and parallel universes of untold diversity and mystery.

Currently, the multiverse theory is really just a theory – a means of trying to fathom the endless complexity of the vastness of the universe around us. It’s generally accepted that, beyond our modern theoretical knowledge of reality, the multiverse persists. Quantum theory suggests that a possible grouping of various worlds is called a multiverse. This implies that in a far wide group of existences where many, perhaps even endless universes are located, and our world may be only one tiny world among a sea of many.

From bubble worlds to a parallel reality in which time runs in reverse, the notion of a multiverse is among the strangest concepts of physics. Can one of these be the truth that we perceive? Are there variants of ourselves that exist in the universe simultaneously? And could various rules of science and perhaps even parallel dimensions be encountered in alternate universes? Oddly though, despite much of the philosophy of the multiverse being abstract or hypothetical, many aspects of it have, plausible grounding.

Here are some of the scientific theories of reality which try to understand the possibility of multiple universes and parallel dimensions mathematically.

- The Quantum Multiverse

Physicist Hugh Everett, who postulated the “different worlds” concept of quantum mechanics, developed this notion. The theory of Everett is that quantum effects allow the cosmos to divide continuously. This could imply that the actions we do in this universe have consequences on other copies of ourselves that exist in alternate universes.

- Inflation Theory

Any otherwise enigmatic aspects of the Big Bang, which essentially needed to be speculated in the past, were clarified by the inflation hypothesis. It also made a variety of quantifiable forecasts, that were subsequently confirmed by experiments magnificently. The prevailing quantum model has by now been inflation.

Inflation in early interstellar evolution is a time of extremely fast, exponential growth. It’s so swift that a small subatomic bit of existence is propelled to proportions much larger than the whole presently measurable field in a fraction of a second. A fiery explosion of ions and radiation explodes at the end of inflation, the force that powered the growth, which was essentially The Big Bang.

Inflation halted around 13.7 billion years prior to today, in our galactic neighborhood, but continues to persist in distant areas of the cosmos, and other “natural” areas like ours are continuously being created. The new locations emerge as small, microscopic spheres and begin rising instantly. Without binding, the spheres begin to expand exponentially; until then, the inflationary expansion pushes them outward, allowing space for more spheres to develop. In one of the spheres, we exist and can only experience a tiny fraction of it, and we can’t keep up with our universe’s widening limits, so our reality as we know it resides in some sort of isolated bubble existence so to say.

- String Theory

One way that theorists have sought to integrate the cosmos into one collection of extremely complex laws is string theory. Nevertheless, to make that happen, that needs an advanced theoretical reimagination of existence and forecasts a rather ludicrous amount of dimensions, possibly within the ten to five hundred or more bracket, each with distinctly varying physical laws of physics. In theory, the equations add up, but checking these theories in practice is incredibly tricky.

String theory accepts an enormous variety of possibilities with various physical properties that characterize bubble dimensions. In various types of bubbles, the measurements we call constants of physics, like the weights of subatomic particles, Newton’s gravitational constant, and more, may all have varying values. In the inflating space, each kind of bubble has a certain chance of forming when taking this theory into account along with the theory of inflation. So, eventually, in the process of everlasting inflation, an infinite amount of universe of all imaginable forms may potentially form.

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