The concept of Parallel universes is not very old and the initial hints can be dated back to 1957 when Hugh Everett gave the “Many worlds interpretation” of the quantum mechanics. Ironically, even after being a Physics student for almost half a decade, I came across this concept while watching an episode of GhostBusters on Cartoon Network. 😐 In the said episode, it so happens that the parallel dimensions overlap suddenly and people are able to move from one world into another. The Ghostbusters come across a set of people from the other dimension and befriend them and so on and so forth. 🙂 I was so amazed by the concept that it remained with me for long.
Also, its surprising to know that the idea was initially proposed in the 1941 short story titled “El Jardín de senderos que se bifurcan(The garden of forking paths)” written by Jorge Luis Borges more than a decade before the actual theory came into picture.
The idea actually caught fire with the Superstring theory, which focused towards explaining all the fundamental forces of Physics by considering them as the vibrations of a tiny super-symmetric string. Suddenly a four dimensional world in which we live was not enough and scientists started talking about 10,11,20,100 and then n dimensions.
The theory also lead to a better understanding of the Big Bang Theory, which has been a topic of debate since its inception. If we consider the M-Theory(which is nothing but a super-set of the Super-string theory), then the universe consists of 11 dimensions out of which we are aware of only 4 as the rest of them are very tightly wrapped and thus are not accessible to us. So, basically our universe is just another bubble amongst the many bubbles occurring simultaneously in the eleventh dimension. And when two such bubbles collide with each other, then a Big Bang occurs which gives birth to another universe. So in a way, the Big Bang was not actually the “beginning of everything” but just happened along the way.
Scientists like Lisa Randall have further fuelled the parallel dimension theory by proposing that Gravity is a very weak force as compared to electromagnetism simply because it is concentrated in another dimension and just seeps into our dimension. You can read further about this here.
All this talk has been a topic of fascination and fiction for decades but Physicists have now started taking it seriously as it simplifies a lot of theories. On the other hand, ever since the concept took wings, there has been numerous fiction stories and movies based on this concept like Alice in Wonderland, The wizard of Oz, Spirited away, Gulliver’s travels, Chronicles of Narnia, The Hitchhikers’s guide to the galaxy to name a few.
On a personal note, I myself have been completely smitten by the idea and ended up writing a short story titled “The loop” based on this concept. You can read the story here.
Well, come to think of it, doesn’t this theory also answers the questions of the appearance of Aliens and UFO, Ghosts, werewolves, Witches, Yeti, Demons and so many other phenomenons which are beyond our understandings. Maybe they all exist in some other dimension and pay us a visit at times. 🙂 What’s wrong in imagining??
Its a known fact that the speed of light is not fast enough to travel across stars or galaxies. A round trip to Mars would take more than a year of travelling at the current speed of our spacecrafts, or less if this new rocket technology is implemented. Then how would we explain so many UFO sightings? If Alien crafts travel at the speed of light(technically you can’t travel faster than that), then it would take them ages to reach our planet. There has to be some other mechanism. This is where the theory of parallel dimensions start making sense and this also gave rise to the theory predicting the presence of wormholes or wrap drives which is an equally interesting theory. But more on it later. 🙂
In the meantime, enjoy the following video titled – Imagining the Tenth Dimension
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