All Questions
Tagged with universe quantum-mechanics
59
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Are there universes where "symmetry breaking" went differently? [closed]
What have happened with other possible variants of asymmetry?
Are there other universes being run in parallel to our universe where the ball is not at C, but at B?
Stephen Wolfram told
I have found ...
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How can baryonic CP violation contribute to the explanation of the large matter-antimatter asymmetry in our universe?
I have been doing baryonic CPV experimental search in the past few years. However, I never really get a good clue on this fundamental question.
The thing is that CPV has only been found in the meson ...
3
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4
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Can the universe be unpredictable but still have only one possible history? [closed]
This question will involve concepts in quantum mechanics.
So unless you believe in many worlds theory, certain outcomes out of a series of outcomes occur. But there seems to be an assumption that one ...
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2
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98
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Is the time evolution of the universe cyclic? [closed]
If we can assume that quantum mechanics does not have a bound on its applicability, i.e. there are no inherently classical properties of the universe, we can represent the physical state of the entire ...
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1
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82
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Spontaneous increase of vacuum energy?
If the vacuum energy of the universe is not at its minimum, that is, the universe is at a false/metastable vacuum state, then it could decay into the true vacuum state.
However, if our universe is ...
2
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Could one, in principle, make any predictions using the wavefunction of the universe? [closed]
Do physicists talk about the wavefunction of the universe? What does that wavefunction even mean? Usually, wavefunctions describe probabilities of measurements of a system. But in this case, every ...
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Is the set of reachable arrangements of an indeterministic universe (of a given material substrate) sensitive to its initial arrangement?
Suppose two equally massive universes have an identical material substrate of the same fundamental particles. Suppose then that these two universes initially have different arrangements of these same ...
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98
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Is the set of reachable states of an indeterministic universe sensitive to its initial conditions?
Suppose two universes with the same amount of mass-energy and evolving according to the same natural laws, but having different initial conditions. Is the set of states that are reachable by the ...
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Are there any mathematically conceivable arrangements of an indeterministic universe that are not physically possible?
Are there any mathematically conceivable arrangements of this universe (particularly ones that respect its mass-energy content) that cannot in principle be achieved through its evolution in accordance ...
3
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99
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Which of these 2 ideas is correct about a "bubble" of false vacuum decay?
The whole volume of the bubble is true vacuum.
Only the surface layer of the bubble is true vacuum while the interior has turned back to false vacuum.
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Is vortex physics key to understand the universe simulation hypothesis? [duplicate]
Seth Lloyd, US computer scientist and Professor of Mechanical Engineering and Physics at the renowned Massachusetts Institute of Technology (MIT) says that the universe itself is a giant quantum ...
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If the universe is infinite, would QM allow the existence of "weird" zones? [closed]
If we suppose that the universe is spatially infinite and extends more or less homogenously in all directions without end (having similar galaxies, stars etc.), then we can assume that there is a more ...
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Does quantum physics apply to other dimensions?
Does quantum physics apply to other dimensions? Common sense seems to dictate that in a universe with two dimensions, quantum physics wouldn't apply, because particles would be vastly different from ...
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Quantum tunneling wave function derivation
In Vilenkin's paper Quantum cosmology and the initial state of the Universe, We find the tunneling wave function to be $ \psi _{T}=\frac{Ai(-z)+iBi(-z)}{Ai(-z_{0})+iBi(-z_{0})}$ (4.27 in the original ...
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Could an external being predict quantum uncertainty given all the information of our Universe? [duplicate]
I'll elaborate and be more specific. I understand that this is almost a metaphysical question but nonetheless I want to give it a try.
Could an external being outside our Universe create 10 ...