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8
votes
2answers
452 views

Is eternal inflation and the multiverse compatible with causal patch complementarity?

The argument for eternal inflation is we have some patch of metastable vacuum with positive cosmological constant, and so it expands exponentially a la de Sitter. Most of the patch decays to something ...
6
votes
1answer
135 views

Causal structure of the inflationary multiverse

In the multiverse as it is described by eternal inflation, it is not clear to me what is its causal structure and in particular if the bubble-universes are causally connected. We start from a ...
6
votes
6answers
895 views

Are many-worlds and the multiverse really the same thing?

Are many-worlds and the multiverse really the same thing? Not too long ago, Susskind and Bousso uploaded the article "The Multiverse Interpretation of Quantum Mechanics" with the thesis that the ...
4
votes
5answers
153 views

Could there be more universes?

In the documentary: "Curiosity - Did God Create the Universe (on YouTube)", theoretical physicist and cosmologist Stephen Hawking states that time did not exist before the big bang. The first ...
4
votes
2answers
654 views

Where does the wave function of the universe live? Please describe its home

Where does the wave function of the universe live? Please describe its home. I think this is the Hilbert space of the universe. (Greater or lesser, depending on which church you belong to.) Or maybe ...
4
votes
2answers
757 views

The multiverse of eternal inflation

I don't have a clear picture of what is "by definition" the multiverse appearing in the models of eternal inflation. A long time ago I heard that it is a quantum state, but in the cosmology books I ...
4
votes
1answer
94 views

Does inflation predict a multiverse?

Does inflation necessarily predict a multiverse? Or is it the case that "It all depends on the properties of the initial field responsible for inflation, about which we can only speculate"?
3
votes
2answers
89 views

How does the friedmon solution to Einstein's equations resolve paradox of bounded infinities?

This article talks about a potential explanation of dark matter based on something called the "friedmon." I have no interest in the dark matter question, but the article has made me curious about ...
3
votes
1answer
178 views

How could we experience multiverse through cosmic background radiation?

I'm reading a book about string theory, and it tells me in the future it could be possible to detect existence of other bubble universes through cosmic background radiation. Is this true? What could ...
3
votes
0answers
88 views

Are frequency and likelihood the same across the multiverse?

My probability text distinguishes between two interpretations of probability values: the frequency of occurrence "as percentage of success in a moderately large number of similar situations" (coin ...
3
votes
0answers
111 views

What is the theoretical geometry of bubble universes?

My research has led me to look into the idea of bubble universes which I don't know very much about. The first thing that I am looking for is understanding or visualising how could many bubbles ...
2
votes
2answers
1k views

The meaning of multiverse

A) I am intrigued by the multiverse theory as mentioned in Stephen Hawking's new book, "The Grand Design". According to his theory, one can have different 'universes' in one ultimate existence, a ...
2
votes
2answers
1k views

What is the difference between parallel universe and multiverse?

What is the difference between parallel universe and multiverse? Is it parallel universe or universes?
2
votes
1answer
2k views

supersymmetry vs multiverse

I'm a complete noobe in physics and quite honestly need help. My question is simple, based on CERN's tentative findings stating the Higgs boson at a mass of ~125 GeV: Is the physics community leaning ...
2
votes
5answers
1k views

If the multiverse theory is true, can there be a Universe where there are different laws of physics?

This is probably a very difficult question. But my question is essentially this, if there are other Universes can different laws of physics exist in those Universes and if so, can't there be a ...
2
votes
2answers
162 views

Cardinality of the Universes Set

No expert by any means, but sometimes, in different contexts the term multiverse used. In quantum mechanics, some say that it is possible that there are actually many universes where all the possible ...
2
votes
0answers
133 views

How plausible an explanation is Quantum Information Theory regarding Quantum Collapse?

I watched this Google Tech Talk recently - Quantum Conspiracy Now I have done some investigating concerning these ideas and their implications, and also have dug up two relevant science papers ...
1
vote
1answer
184 views

Fine tuning: why is multiverse with anthropic principle considered a better explanation than anthropic principle alone?

I got the impression from several public lectures that, when it comes to the fine tuning problem, physicists tend to give multiverse together with anthropic principle as a plausible solution, but ...
1
vote
2answers
398 views

Can we actually prove with 100% accuracy that there is more than 3 dimensions plus time (t,x,y,z)? [duplicate]

Can we actually prove with 100% accuracy that there is more than 3 dimensions plus time? In the news there are always articles like "there are probably 7, 11 or more dimensions", "time is actually ...
1
vote
2answers
178 views

A question about multiverse

I have a question that I would like to ask here since I'm not an expert or any near to that. Actually I just came up with this question when I was watching The fabric of cosmos. I couldn't find where ...
1
vote
2answers
76 views

Is there any mathematical structure modelling parallel universes (multiverse)?

Is there any mathematical structure modelling parallel universes (multiverse)? If we established such structure, is it science or science-fiction?
1
vote
1answer
227 views

Can the multiverse theory be tested by gravity waves?

I was wondering if the presence of multiverse could be detected by the fact that there is probably matter disturbing space-time that would cross boundaries?
1
vote
1answer
233 views

Parallel universe and Infinite monkey theorem [closed]

Is the Infinite monkey theorem helpful for determining the existence of the very same our universe somewhere else?
1
vote
0answers
55 views

How many different types of (hypothetical) multiverse theory exist? [closed]

How many different types of (hypothetical) multiverse theory exist? For example, the obvious Quantum MWI, eternal inflation, cyclic universe etc
1
vote
0answers
65 views

In bubble-multiverse theories, are the parameters values describing a given universe members of a countably infinite set?

I recently had the chance to read Brian Greene's "Hidden Reality" with all its talk of multiverses. He makes a case that there may be an infinite number of identical copies of our world "out there". ...
1
vote
0answers
61 views

How many worlds does the world split into in the Many Worlds Interpretation? [duplicate]

I've been reading up on the Many Worlds Interpretation of Quantum Mechanics, and there is one thing (among many) that I really don't understand. How many worlds are 'created' by an 'observation' or ...
1
vote
3answers
191 views

According to wave function collapse you only have one outcome, so what happens to the other superpositions?

If the superpositions of a wave function are not needed because only one of the superpositions is allowed, what happens to the eigenvalues of the "null" superpositions? Is the energy transferred ...
0
votes
2answers
1k views

Where do black holes go?

According to many physicist what ever goes near to a black hole is pulled by it sucked up in a parallel universe. As far as i know black holes are also made up of material particles as any other thing ...
0
votes
1answer
98 views

The argument for cosmological natural selection

I am reading Smolin's book Life of the Cosmos. One part which I can hardly understand is the argument for cosmological natural selection as a scientific principle. Smolin keeps on saying that ...
0
votes
1answer
282 views

Multiverse theory and infinite individuals

I read an article about possibility of existence of multiverse and came up with a conflicting view with one of the sentences written in the article which goes as follows: "If space-time goes on ...
0
votes
2answers
147 views

How could the multiverse theory be disproven?

Theorists (physicists) suggest that there is the term/entity, the Multiverse that contains a huge number of universes not necessarily like our own. I personally find this theory very elegant because ...
0
votes
4answers
185 views

Meaning of probability in a multiverse/a many-world interpretation?

Consider me tossing a coin and I got tail as a result on observing it. Then, what would be the result of the 'parallel me' in another universe? If the 'parallel me' gets head as a result then, ...
0
votes
1answer
146 views

Is it possible that a black hole sucks energy that is the origin of another universes big bang?

The universe expanded from nothing, right? And black holes may be a "gate" to parallel universes, is it possible that stars that is being sucked in by black holes in our universe may be the origin of ...
0
votes
1answer
83 views

Theoretical String Landscape Question

Could it be plausible that the same theoretical string "shape" occurs twice. As in two or more universes with the same amount of dark energy and string shape. The term "shape" I'm defining as based ...
0
votes
1answer
118 views

Question on communication between universes in a level 1 multiverse

Can matter, energy, or information travel from one universe to another in a Level I Multiverse? That is, is there any communication between Hubble volumes in an eternal inflation-induced multiverse?
0
votes
1answer
56 views

Is there any theory about extra-Universal place? [closed]

I mean you can probably imagine cells and extracellular space between them. In biology some things can go through the cell membrane in and out. What if universe/s are "similar" and some form of ...
0
votes
2answers
644 views

How do we prove that multiverse exist?

Scientists are talking about our universe not being the only universe, but even if that is true, how can we prove the existence of multiverse? We are being 'confined' in this universe and there is no ...
0
votes
1answer
81 views

Inflation in a closed universe or a stage 1 multiverse?

With the discovery of gravitational waves, Max Tegmark has been using this to promote his level 1 multiverse in that the universe is open (non-compact) and everything duplicates. My question is, are ...
0
votes
0answers
93 views

Test for Many Worlds Hypothesis

If one actually ran an experiment similar to the Schrodinger's cat thought experiment, and ran it enough times (with the same cat) to get the confidence interval good enough, could one say that ...
0
votes
0answers
183 views

Colliding bubbles in hyperspace

Assuming the following A universe is the surface from a bubble in hyperspace. Inside a bubble there is nothing, only the surface represents a universe. The size of the bubble is time. Dark matter is ...
0
votes
5answers
196 views

Is our universe the only universe out there or are there also other possible universes?

There is the specific universe we live in, the "actual" universe with planet Earth, humans evolving, and us discussing metaphysical debates on physics.se in 2012, etc. There might or might not also ...
-1
votes
1answer
208 views

Can parallel universes constitute the missing mass aka dark matter?

I was pondering about this question for a while now. And with my limited knowledge of physics I can answer myself - if parallel universe theory is true and if indeed there is gravitation leakage from ...
-1
votes
1answer
546 views

parallel universe- are there an infinite amount of universes?

Parallel universe: in every universe, you are presented with a different decision. Does that mean there are an infinite amount of parallel universes? I.e., if in one universe I choose to go left, I am ...
-1
votes
1answer
111 views

Existence of time in some other universe [closed]

Is it necessary that time should exist in another universe if it (universe) is there? How do we perceive timelessness?
-2
votes
1answer
125 views

Finite amount of matter and space

(Please bear with me.) If the universe included multi-universes, and black holes transferred matter between them, AND yet there was a large, but FINITE amount of matter and space, How would that ...
-3
votes
2answers
218 views

A question to the theory of multiverse

Guys I couldn't catch a point of multiverse theory.. Theory: If space-time goes on forever, then it must start repeating at some point, because there are a finite number of ways particles can be ...
-6
votes
2answers
118 views

Does the warp drive theorically allows travels between other universes? [closed]

Does the warp drive allow to travel between universes? Even in a level 2 multiverse?