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| Many World Interpretation |
Introduction[]
This blog will explain Many-worlds interpretation or a type III Multiverse and it's usability in "When They Cry" and how it fits Beatrice's catbox in Umineko at every level
Many-worlds interpretation[]
Source: https://en.wikipedia.org/wiki/Many-worlds_interpretation
The many-worlds interpretation (MWI) is an interpretation of quantum mechanics that asserts that the universal wavefunction is objectively real, and that there is no wavefunction collapse.[2] This implies that all possible outcomes of quantum measurements are physically realized in some "world" or universe.[3] In contrast to some other interpretations, such as the Copenhagen interpretation, the evolution of reality as a whole in MWI is rigidly deterministic.[2]
MWI basically asserts the idea that there is only one Wave Function for the entire MWI not multiple and that even if you observe a universe, others will not disappear, we just won't be able to perceive them.
Source: https://en.wikipedia.org/wiki/Many-worlds_interpretation
This is intended to resolve some paradoxes of quantum theory, such as the EPR paradox[5]:462[2]:118 and Schrödinger's cat,[1] since every possible outcome of a quantum event exists in its own universe.
Source: https://www.nature.com/articles/d41586-019-02602-8
For physicists, the theory is attractive because it explains many puzzles of quantum mechanics. With Erwin Schrödinger’s thought experiment concerning a dead-and-alive cat, for instance, the cats simply branch into different worlds, leaving just one cat-in-a-box per world.
MWI solves Schrödinger's Catbox paradox.
"Many-Worlds" came along in the late 1950's, when a Princeton grad student named Hugh Everett III pointed out that you don't really need to have the wavefunction collapse. Instead, you can simply have the wavefunction continue along as it was before, retaining the multiple branches corresponding to the different possible measurement outcomes. In this view, we "see" a single outcome because we're part of the wavefunction, with everything entangled together. So, Schrödinger's infamous cat is both alive and dead before the box is opened, and after it's opened, the cat is alive-with-a-happy-Schrödinger, and dead-with-a-sad-Schrödinger. If Schrödinger goes on to tell his fellow cat-physics enthusiast Eugene Wigner the results, then the cat is alive-with-a-happy-Schrödinger-and-a-happy-Wigner and dead-with-a-sad-Schrödinger-and-a-sad-Wigner. And so on.
MWI explains Schrödinger's catbox so that each universe is real and wave function doesn't collapse but we just cannot perceive it because we are part of the wave function.
Source: https://en.wikipedia.org/wiki/Many-worlds_interpretation
The many-worlds interpretation implies that there are very—perhaps infinitely[11]—many universes. It is one of many multiverse hypotheses in physics and philosophy. MWI views time as a many-branched tree, wherein every possible quantum outcome is realised
In MWI, every outcome is realized in their own separate parallel universe
Infinite-Dimensional[]
Source: http://m.nautil.us/issue/44/luck/the-multiple-multiverses-may-be-one-and-the-same
“Hilbert space is the mathematical space associated with the quantum wave function. It is an abstract representation of all possible states of a system. It’s a bit like regular Euclidean space, but with a variable number of dimensions depending on how many states the system is allowed to have. A qubit—the fundamental data unit in quantum computers, which can be either ‘0’ or ‘1’ or some combination thereof—has a two-dimensional Hilbert space. A continuous quantity such as position or velocity corresponds to an infinite-dimensional Hilbert space.”
Continious qunatities/Infinite probablistic objects corresponds to an infinite-dimensional Hilbert space
Source: https://en.wikipedia.org/wiki/Multiverse#Level_III:_Many-worlds_interpretation_of_quantum_mechanics
"The only difference between Level I and Level III is where your doppelgängers reside. In Level I they live elsewhere in good old three-dimensional space. In Level III they live on another quantum branch in infinite-dimensional Hilbert space."
Source: https://space.mit.edu/home/tegmark/multiverse.pdf
https://media.discordapp.net/attachments/623667473484480512/629296521363456001/image0.png
"In quantum theory, the state of the universe is not given in classical terms such as the positions and velocities of all particles, but by a mathematical object called a wavefunction. According to the so-called Schrodinger equation, this state evolves deterministically over time in a fashion termed unitary, corresponding to a rotation in Hilbert space, the abstract infinite-dimensional space where the wavefunction lives. The sticky part is that there are perfectly legitimate wavefunctions corresponding to classically counterintuitive situations such as you being in two different places at once"
MWI/Type III Multiverse comes with Infinite-Dimensional Hilbert space, so given theory in mentioned in-verse and there aren't contradictions, this gives said verse an Infinite-Dimensional space
MWI in When They Cry[]
Source: https://0707toshokan.wordpress.com/2019/09/22/a-cat-a-die-and-the-parrallel-worlds/
21/08/2005
You probably know that sides of a die go from 1 to 6.
You can predict what number will come up when you throw a die, but with logic, you can find out that the most likely outcome is 7 when you throw two dice and 14 when you throw four. Now, if we return to the starting point, the question is what is the average when you throw one die.
Coming from what we figured out, several numbers are most likely to come out. “The number that will most likely come out is 3,5”.
There are probably quite a few people who will come up with that conclusion. However, a die only has numbers from 1 to 6.
In other words, it’s not possible to get 3,5. Probably, a die that has a side with 3,5 isn’t sold anywhere. I guess some people will try to get close to 3,5 by throwing a die multiple times, but it’s “an average you get when you throw several dice”, not “a die”. The numbers on the sides of dice are from 1 to 6, and the probability of getting each number exists at the “same time” equally. Like in a game of odd and even, you put die into an opaque cup. What number will die inside a cup show? I’d like to say it’s 3,5, but that number isn’t carved out on a die.
Which means, there are 6 “worlds” inside a cup, each for one side of a die.
This hypothesis of 6 worlds existing at the same time is called “Many-worlds theory” or “Everett’s theory” in quantum mechanics. ※This “Many-worlds theory” speaks about “probable worlds” that exist at the same time, not about SF stuff like on more Earth on the other side of the Moon…
(In other words, it doesn’t mean that just because you can get any number out of 6, there are 6 different Earths in this world).
...
Today, I’ve presented you one of the ways to play Higurashi no Naku Koro ni.
Please forgive me for making it that long and incoherent.
Everett's Many-Worlds Interpretation is usable in verse as per Word of the God, and it is even mentioned Higurashi follows it.
According to Higurashi Rei, when you exist in a world (In context referring to the universe), all other worlds are non-existent, a dream to you.This fits perfectly with Everett's MWI.
"Many-Worlds" came along in the late 1950's, when a Princeton grad student named Hugh Everett III pointed out that you don't really need to have the wavefunction collapse. Instead, you can simply have the wavefunction continue along as it was before, retaining the multiple branches corresponding to the different possible measurement outcomes. In this view, we "see" a single outcome because we're part of the wavefunction, with everything entangled together. So, Schrödinger's infamous cat is both alive and dead before the box is opened, and after it's opened, the cat is alive-with-a-happy-Schrödinger, and dead-with-a-sad-Schrödinger. If Schrödinger goes on to tell his fellow cat-physics enthusiast Eugene Wigner the results, then the cat is alive-with-a-happy-Schrödinger-and-a-happy-Wigner and dead-with-a-sad-Schrödinger-and-a-sad-Wigner. And so on.
As I sent before, MWI works in this logic, even when the catbox is opened Wave Function Collapse doesn't occur but he just views one of the possibilities.
According to MWI, there is one universal wavefunction,which fits in Umineko as Bernkastel says:
"Truth is unfixed. It can be like a particle, or like a wave, and it can hold conflicting forms at the same time."
There is one truth in which the wave function, taking different forms inside the catbox, which fits the universal wave function.
Finally, Beatrice's gameboard contains infinitely branching parallel universes despite already being infinite. The self-branching parallel universes are perfectly fitting and a condition for MWI yet again:
Source: https://space.mit.edu/home/tegmark/crazy.html
There may be a third type of parallel worlds that are not far away but in a sense right here. If the equations of physics are what mathematicians call unitary, as they so far appear to be, then the universe keeps branching into parallel universes as in the cartoon below: whenever a quantum event appears to have a random outcome, all outcomes in fact occur, one in each branch. This is the Level III multiverse. Although more debated and controversial than Level I and Level II, I've argued that, surprisingly, this level adds no new types of universes. Below are a series of papers of mine discussing these parallel universes in more detail.
Conclusion[]
This blog explained MWI is usable in WTC-Verse as per Word of God, Higurashi's gameboard is mentioned to use it and Beatrice's gameboard fits its conditions perfectly meaning Many-Worlds is usable in those too.