All Questions
Tagged with cosmology quantum-mechanics
132
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Can Poincaré recurrences happen eventually in a universe with zero vacuum energy?
I am interested in the topic of possible vacuum up-tunneling and down-tunneling events in cosmology. One popular instance of this is a vacuum decay from a metastable vacuum energy level to a "...
- 2,462
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471
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What is meant by "spontaneous creation" in this paper?
I have some questions in regard to the paper "Spontaneous creation of the universe from nothing". If I am not mistaken it is akin to Alexander Vilenkin's proposed cosmological model that has the ...
CommunityBot
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Are vacuum "up-tunneling" phase transition in AdS and Minkowski spaces impossible?
I am interested in the topic of vacuum phase transitions in models of the universe. One popular instance of this is a vacuum decay from a metastable vacuum energy level to a "true" one (in ...
- 2,462
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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 ...
- 8,512
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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 ...
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If a laser is bounced off two mirrors repeatedly for several years, will it g et red-shifted?
I understand that red shift is what shows how far away the star light came from, or how far back in time the light was emitted? If so, should we not see red-shift if a laser is bounced repeatedly off ...
- 6,404
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Electrons keeping dynamical quantum fluctuations?
I was thinking about this paper (https://arxiv.org/abs/1405.0298) where the authors argue that there wouldn't be dynamical quantum fluctuations in a De Sitter space as fluctuations would be static ...
- 6,404
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Does science have evidence that the simulation hypothesis is true? [closed]
It is often written that the simulation hypothesis cannot be proven or disproved.
There is also a lot of talk about the fact that the simulation hypothesis is not science.
But the people also write ...
- 1,809
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How fast would a hypothetical microscopic quantum black hole evaporate with an effective mass of two protons?
According to the analysis shown in this research here, see link the evaporation time can be calculated in seconds using this equation:
$$
\begin{array}{l}
t_{\text {evap }}=\left(\frac{5120 \pi G^2}{\...
- 358k
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625
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Why Superfluid Vacuum Theory has not proved yet that Vacuum space is possible a superfluid?
Our Universe and subatomic world being defects of an omnipresent type of superfluid we call "Vacuum Space" therefore a medium, unknown phase of matter is an intriguing idea expressed by SVT.
...
CommunityBot
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How would have electron and muon fields been identified as distinct in the electroweak era?
During the Electroweak era, the Higgs mechanism had not yet distinguished particles such as electrons and muons by mass. Is there a conceivable experiment, or a hypothetical cosmological observation ...
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485
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How was electrical charge formed in the Big Bang?
We know that fundamental particles (Quarks, electrons, etc.) were formed a while after the Big Bang. How was their electrical charge (its value and sign) determined? Was electrical charge present in ...
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The Von Neumann-Wigner interpretation as the explanation for the fine-tuning problem and the existence of free-will [closed]
Disclaimer: Some of the concepts I'm using here are considered by some to be pseudo-science. I do not intend to have a hocus-pocus discussion and fairies and wizards here, my intention is to have a ...
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How was the universe once small enough to be subject to quantum mechanical effects?
I have often read that our universe was once small enough to be subjected to quantum mechanical effects, potentially altering how our universe turned out. This is a large theme in Laura Mersini-...
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Quantum fluctuations and symmetries?
While reading this piece about symmetry breaking, in section 3 I came across the term "anomalous symmetry breaking", which happens when a symmetry is broken by quantum fluctuations:
Let us ...
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