Parallel universes Definition and 48 Threads

Parallel universe, also known as a parallel dimension, alternate universe, or alternate reality, is a hypothetical self-contained plane of existence, co-existing with one's own. The sum of all potential parallel universes that constitute reality is often called a "multiverse".
While the three terms are generally synonymous and can be used interchangeably in most cases, there is sometimes an additional connotation implied with the term "alternate universe/reality" that implies that the reality is a variant of our own, with some overlap with the similarly-named alternate history. The term "parallel universe" is more general, without implying a relationship, or lack of relationship, with our own universe. A universe where the very laws of nature are different – for example, one in which there are no Laws of Motion – would in general count as a parallel universe but not an alternative reality and a concept between both fantasy world and Earth.

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  1. C

    Parallel Universes: Multiverse vs Many Worlds - Splits?

    Hi, sorry - forgive me for posting (I am not much of a science guy but I am still interested). I am just watching a documentary (I know not a great source for scientific information - but it got me thinking). In the documentary it talks about the many worlds theory (which I believe is different...
  2. E

    B In parallel universes, everything that can happen happens, but why?

    Hello, on quantum theory of parallel universes. It seems quite ridiculous to me, in quantum mechanics everything, that's not forbiden by rules happes. Are there some theories why it may be ? Or is it to early to even speculate about that. Elon musk said, that there is chance bilion to one, that...
  3. EnglandSP

    B Black Holes as Gateways to Parallel Universes?

    I'd like to know people's views on the possibility of Black Holes being 'Gateways' or 'Portals' to parallel universes.
  4. M

    Physics Problems on Flash Tv Series

    Hello, i am not sure where to discuss it but here maybe proper for this thread. I just want to discuss about DC's Tv show Flash and physics on it like singularity or parallel universes?
  5. billyp245

    Multiverse theory and Dark Matter

    I've been looking over the idea of the multiverse recently. I am trying to grasp exactly why so many physicists believe in the idea when it seems more philosophical than scientific. Are there any good indicators pointing towards the theory from QM or GR? The gripe that I also see with it...
  6. D

    Exploring the Possibilities of Parallel Universes: Seeking Help

    Hi, I will not claim extensive knowledge of physics which is exactly why i need honest help from you all.. Writing a story based on the idea that with every single decision being made that a new time line is created.. I want it to be logical and possible even if its only theoretically...
  7. H

    I Parallel universes and randomness

    As you might know there is no such thing as true randomness, which means everything happens for a reason. Let's say everything with the exactly same input will always return the exactly same output if you repeat it, no matter if there is a computer or a human being. Much might seem random, but...
  8. D

    Is it possible to shift between parallel universes?

    I am new here and I have a question. Is it possible to shift between Everett's parallel universes in the form of your consciousness?
  9. Adam LeTrexane

    A Addresses of Parallel Universes

    Hi there! Alright, so let me start off by saying I'm a biochemist by trade, but have an extreme (and possibly unhealthy) interest in the more bizarre aspects of modern physics. Admittedly, I don't understand the mathematical formalisms associated with the theories I know of, so bear with me if...
  10. BadgerBadger92

    B A Question About Parallel Universes....

    Keep in mind this is completely a theoretical question... In the end I know nothing about physics. I just have a question. If parallel universes exist, and two or more of them had the ability to travel time (If that were even possible at all. Doubtful.) could someone technically travel to this...
  11. Prof.gaming

    B A question about parallel universes I want to share

    Um ... yea. This was on my mind for a long time and was bugging me like hell , so I want to share it and ask if its correct or could be correct . My theory is , as we know , there are unlimited parallel universes , made by the Many-worlds interpretation . Sometimes the difference is unnoticeable...
  12. RyanH42

    Infinite Universe and Parallel Universes

    If we suppose universe is infinite than there will be no parallel universes.So I know that If ##Ω_k##→Universe will be infinite.Then there will be no parallel universes cause there's one universe. I am confused.Is that mean the parallel universe idea is wrong ?
  13. nivak

    Is it possible to travel to parallel universes?

    Is it possible to travel to parallel universes of many worlds interpretation of quantum mechanics?
  14. R

    Consequences of parallel universes

    Hi, I have some questions that came up while thinking of this idea of parallel universes, I'm glad if someone could help answer these. 1. Assume we somehow discover another universe, does this discovery then imply that OUR universe is finite in size? Or is it still possible to have an...
  15. A

    Mathmatically, why are parallel universes even theorized?

    Hi all, What is the Hamiltonian or main equation, that if you solve it, parallel universes are predicted? For example, the Dirac equation, if solved, predicts the existence of anti-particles. If You solve Maxwell's Equations, you predict there should be E & M waves. Solving certain...
  16. P

    What Defines a Different Universe?

    Are there Parallel Universes ?
  17. D

    Have I seen the layers of parallel universes.

    Hi, this is my first post on this forum so let me start by saying that I am not well versed in physics or science but I do have a real connection to the nature of the planet and also have awareness of the un-nature that is escalating. I want to relate an experience that I had recently and I want...
  18. mrspeedybob

    Dark matter as matter in parallel universes

    I was watching a documentary the other day and this idea occurred to me. Here are links to the relevant portions on youtube... http://www.youtube.com/watch?v=4BRhjntvGoE&feature=related http://www.youtube.com/watch?v=2zgxvGaei6o&feature=related If gravity is not confined to 3 spatial...
  19. S

    Parallel Universes: Exploring the Multiverse Theory

    The multiverse is a theory in which our universe is not the only one, but states that many universes exist parallel to each other. These distinct universes within the multiverse theory are called parallel universes. A variety of different theories lend themselves to a multiverse viewpoint. As...
  20. J

    Does this article prove that parallel universes exist

    Does this article prove that parallel universes exist... http://www.physorg.com/news/2010-12-scientists-evidence-universes.html Yes. no or to early to say Can you please keep your answers simple I am not very advanced in physics thanks in advance
  21. C

    Is there a proof of parallel universes?

    Every science documentary I've watched talks about parallel universes. Is it a hypothesis formed by mathematical models, if so what are they?
  22. G

    Not Parallel Universes, Nested Universes

    I am a physics junkie. I have recently been looking into parallel universe theories, and find them intriguing. While the science behind the multiverse theory is sound, I believe that parallel universe theories as proposed can be expounded upon to give a more plausible model. This requires us to...
  23. P

    Freaky Physics Proves Parallel Universes Exist

    Please, experts, tell me that this isn't real, or that it's a misinterpretation of data: "...And it's all because of a tiny bit of metal -- a "paddle" about the width of a human hair, an item that is incredibly small but still something you can see with the naked eye. UC Santa Barbara's...
  24. M

    Michio Kaku, Parallel Universes, and Galactic EZ Bake Ovens

    This is my first post on this forum, I apologize in advance if I placed this in the wrong location. My question is this: I'm watching the Science Channel tonight, and on an episode of Sci Fi Science, Dr. Michio Kaku suggests that if you heat space up to say, a couple trillion degrees...
  25. A

    Hey guys, this is my theory of blackholes and how new parallel universes

    my theory of black holes, and the start of the universe, ok ,all black holes go to central point of mass, all the central points of all the black holes combine to converge to a parallel universe, which takes the mass from our universe, to start the "big bang", when enough mass has been forced...
  26. A

    Can Love Transcend Across Parallel Universes?

    Supposing that parallel universes do exist does that mean that if you meet and are attracted to a woman or man in this world but don't or are unable to get together and fulfil a relationship with that person in this world for what ever reason that in some other parallel universe that the...
  27. B

    Exploring the Possibility of Parallel Universes

    SOooo i finally understand (with in reason) M theory! but correct me if i am wrong, they say the universe (or multiverse) started because parallel universe collided and gave mass and such and formed our universe. But what i don't no is how can we tell the actually existence of parallel...
  28. E

    Is Travel to Parallel Universes Just a Myth or a Real Possibility?

    I was watching a show called "http://www.history.com/shows.do?action=detail&episodeId=373152" " on History Channel. It is claimed that someday it may be possible to travel to parallel universes. Does this not violate law of conservation of energy, mass and information? Would this action...
  29. MathematicalPhysicist

    Could Parallel Universes Really Collide?

    If we were to take the multiverse paradigm, and there are multitude of universes which do not intersect and thus don't collide, to truly be parallel there shouldn't even be a wormhole between the universes. Suppose that wormholes were a possibility, and they were stable, then also the...
  30. M

    Parallel universes and the Quantum Field

    Do all universes share the same quantum or unified field?
  31. R

    Quantum Physics and Parallel Universes and your mind

    Hello everyone. I am new here so let me say what I said in my first post first... Hello everyone, before I start, I just want to say I’m a little out of place here. I am not a student of physics or cosmology, and I am definitely not a professional at anything scientific. I am an artist and...
  32. T

    Many worlds / parallel universes & improbable events

    Hi, I'm hoping that someone can explain one problem I have with the many worlds theory. If the many worlds theory is true, then we are currently living in a universe which is the product of an infinite number of splits in the past. Thus, looking at our history, we should have numerous...
  33. R

    Explore Parallel Universes: The Universe

    The Universe: Parallel Universes Part 1 https://www.youtube.com/watch?v=<object width="425" height="344"><param name="movie" value="http://www.youtube.com/v/SAhCUtkFA2A&hl=en&fs=1"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess"...
  34. H

    Do Parallel Universes Share the Same Timeline?

    Hey, I have another question about parallel universes. Are they synchronized, chronologically? For example, does the sun die out at the same time (in parallel universes containing our solar system)?
  35. H

    Wormholes, parallel universes, negative mass

    Hi. I have a few questions. Is it theoretically possible to build a wormhole to a parallel or baby universe? Could a sufficiently advanced civilization do this? Could negative mass play a role in it? Could something else?
  36. D

    Parallel universes make quantum sense?

    Parallel-universes-make-quantum-sense The Everett, or many-worlds, interpretation newscientist ? wouldn't this run out off energy extremely quickly
  37. qspeechc

    Explaining the Quantum Mystery: Are Parallel Universes the Answer?

    I am no physicist, but it sounds like this is pretty big. From the last paragraph, it sounds like a hypothesis to me. Anybody like say what's this all about, in simple terms for the layman like myself :smile:
  38. S

    Parallel Universes: The Mind-Boggling Reality Confirmed by Oxford Scientists

    This is the newest science hype on the market: http://www.telegraph.co.uk/earth/main.jhtml?xml=/earth/2007/09/21/sciuni121.xml&CMP=ILC-mostviewedbox http://www.breitbart.com/article.php?id=paUniverse_sun14_parallel_universes&show_article=1&cat=0
  39. N

    Exploring Parallel Universes: BBC Horizon Documentary (44:35)

    Here is a link to a parallel universe... documentary. BBC Horizan - Parallel Universes (44 min 35 sec) http://video.google.co.uk/videoplay?docid=4183875433858020781
  40. E

    Parallel Universes: Everett vs M-Theory

    Hi all, I'm trying to figure something out about parallel universes. I've read that according to quantum physics, Everett's interpretation can explain parallel universes, while according to M-theory, they can be explained by the 11th dimension. The question is: are this two kind of parallel...
  41. M

    Parallel Universes and Quantum Computing

    If I remember right Paul Davis in his book 'Parallel Universes' suggested that each possible position of an electron represented its place in an atom of a corresponding parallel universe. Does this or a similar/associated principle apply to the operation of quantum computing?
  42. O

    Parallel Universes (recent video)

    There are some recent videos on String, M-theory, Branes, Multiverses with most of our favorite researchers (orig aired on UKTV) Parallel Universes #1 (Michio Kaku - CUNY; Alan Guth - MIT; Burt Ovrut - UPenn) Parallel Universes #2 (Paul Steinhardt Princeton; Guth, Kaku, Ovrut; Michael Duff -...
  43. M

    Number of parallel universes formed at each measurement

    I hope no one has posted this question before as it seems to be a pretty obvious question. Let's take a hypothetical element which has an 85% chance of emitting an alpha particle in one hour. Now, unless I'm wrong, I believe that Everett's many-worlds interpretation says that a measurement...
  44. SOS2008

    What are you doing in your parallel universes?

    Though I don't really know if there are parallel universes, I can't help but wonder about the theory. And since I can only wonder, I thought I'd start the ball rolling (hopefully other people can speculate much better than I do). · In the first universe, I live a life very similar to...
  45. H

    Parallel Universes: Exploring Theory & Time Travel

    Hi all, I would like to ask an important question to me please. What is the theory of parallel universes ?? Is there any proof for it ?? If it is right, how can it be used for time travel ? thank u Hadeka.
  46. S

    Parallel universes almost certainly do not exist

    I came up with this reasoning last week, and I've been looking forward to posting this here since then. Okay, supposedly parallel universes are created when a choice is made, such as Milk or Tea, Answer the phone or Don't answer the phone, and Post this in the forums or Don't post this in the...
  47. Z

    Parallel Universes moving along the time axis and their messengers

    It can be known from Section 6.4 of Chapter 6 (of the Antigravitation Engine Site; same below) that there exist parallel universes moving along the time axis. Objects that have large degrees of uncertainty in the time can travel from one universe into another, serving as the messengers of...
  48. D

    Exploring Theoretical Physics: Time Travel and Parallel Universes

    I'm new to the topic of theoretical physics so can someone fill me in is it possible to go back in time and go to the future? because say Joe is from the future, and he goes to the pass and kill's his younger version. will he instantly disappear? oh yeah btw, it struck me, parallel...
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