Tagged Questions
2
votes
1answer
142 views
0
votes
1answer
96 views
Particles entangled after the big bang
Is that true that the big bang caused the quantum entanglement of all the particles of the universe so every particle is entangled to each other particle of the universe?
3
votes
0answers
149 views
Quantum Entanglement Versus Inflation in the Early Universe?
Quantum entanglement is one of the most fascinating and mysterious phenomena in nature. It needs no interactions, or any sort of exchange for it to take place. It is possible, not against any rules of ...
2
votes
0answers
44 views
Topological Solitons and the Higgs Condensate entanglement
While focusing on resolutions to the Firewall controversy, and the possible implications of the Higgs field as it relates to the issue, the possibility of using EPR correlations in the Higgs ...
0
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0answers
92 views
QFT on fixed Robertson-Walker background spacetime [closed]
What's known about QFT (or even QM) on fixed, but non-Minkowski spacetimes such as the cosmological Robertson-Walker background defined by:
$ ds^2 = c^2 dt^2 - a(t)^2 * (dx^2 + dy^2 + dz^2) $
By ...
4
votes
3answers
148 views
Could dark energy be powered by force particles that obey quantum mechanics?
From what (little) I know about physics, I understand that the universe is expanding due to dark energy, and I understand that no one quite understands it yet. I also understand that the cosmic ...
2
votes
2answers
177 views
Was Planck's constant $h$ the same when the Big Bang happened as it is today?
Was Planck's constant $h$ the same when the Big Bang happened as it is today?
Planck's constant :
$$h= 6.626068 × 10^{-34}\, m^2 kg / s,$$
$$E=n.h.\nu,$$
$$\epsilon=h.\nu$$
1
vote
0answers
61 views
Unitarity and quantum cosmology
By studying quantum cosmology I was asking myself if the fact that the universe is expanding, so space is expanding and with it I would say that phase space is also expanding, so it's a non-unitary ...
1
vote
2answers
222 views
Quantum physics before the observer and relic interferences
It is known that the concept of an observer plays important role in quantum mechanics. In interpretations with collapse only the observer can trigger the wavefunction collapse. From this naturally ...
2
votes
2answers
114 views
What are some examples of how the discovery of dark energy can impact other, seemingly unrelated, branches of physics?
We know that dark energy is leading to the accelerating expansion of the universe and therefore determines the ultimate fate of our universe, but what other implications might it have on physics and ...
2
votes
2answers
166 views
Can the implications of dark energy be used to bridge the gap between Quantum Mechanics and General Relativity?
Can the findings of the Physics Nobel Laureates of 2011, namely the overpowering existence of dark energy (vacuum energy) have any implications in the quest the combine Quantum Mechanics and General ...
4
votes
2answers
747 views
Physical laws prior the big bang (quantum fluctuations)
A theory among scientists says that quantum fluctuations caused the big bang and created the universe. This seems plausible to me.
What I can't grasp yet is how a quantum fluctuation can even start ...
3
votes
2answers
205 views
Quantum Fluctuations as a model for the Big Bang?
I have quite often heard (and even used) the idea that quantum fluctuations are a way to explain the whole "something from nothing" intuitive leap. I am about to give a talk at a local school on ...
7
votes
3answers
599 views
Imaginary time in quantum and thermodynamics
The following question is about chapter 2 of Sakurai's Modern Quantum Mechanics. I wish I could link to the Google book, but it doesn't seem to have a satisfactory preview to be able to read the ...
3
votes
1answer
146 views
Can the entropy of a subsystem exceed the maximum entropy of the system in quantum mechanics?
Quantum mechanics has a peculiar feature, entanglement entropy, allowing the total entropy of a system to be less than the sum of the entropies of the individual subsystems comprising it. Can the ...
0
votes
1answer
314 views
Does quantum mechanics prohibit extraterrestrial life? [closed]
There is a known thought experiment, connected to quantum immortality: a duel between physicist and a philosopher.
Each turn physicist and philosopher fire at each other with a pistol. The quantum ...
3
votes
1answer
308 views
Quantum death like heat death possible?
Quantum decoherence is an irreversible process which is the result of interaction of the system with its environment. It prevents interference due to lack of coherence. Environment acts just like a ...
