The decoherence tag has no wiki summary.
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Is decoherence even possible in anti de Sitter space?
Is decoherence even possible in anti de Sitter space? The spatial conformal boundary acts as a repulsive wall, thus turning anti de Sitter space into an eternally closed quantum system. Superpositions ...
14
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8answers
2k views
Reversing gravitational decoherence
[Update: Thanks, everyone, for the wonderful replies! I learned something extremely interesting and relevant (namely, the basic way decoherence works in QFT), even though it wasn't what I thought I ...
7
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2answers
323 views
Is the collapse of the wave function inherently time asymmetric?
Schroedinger's equation, as we all know, is time symmetric. In quantum field theory, we have to come up with a more sophisticated CPT reversal, but the essential point remains unchanged. However, the ...
7
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1answer
156 views
Any link between decoherence and renormalization?
I have been studying decoherence in quantum mechanics (not in qft, and don't know how it is described there) and renormalization in QFT and statistical field theory, I found at first a similarity ...
6
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4answers
264 views
Can a super-positioned human be used to differentiate between the Copenhagen interpretation and many-worlds?
I'm pretty new to quantum physics, so there's a good chance that I have this all backwards.
However, by my understanding of the Copenhagen interpretation, the wave function 'collapses' upon ...
5
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4answers
2k views
Can the Montevideo interpretation of quantum mechanics do what it claims?
Partly inspired by the great responses to a my previous physics.SE question about "reversing gravitational decoherence, today I was rereading the intriguing papers by Gambini, Pullin, Porto, et al., ...
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3answers
195 views
Subjectivity of decoherence
I read that quantum decoherence is subjective, in the sense that two observers may not have the same "environment" and after each one has traced over those degrees of freedom they will end up with a ...
4
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2answers
109 views
What is behind recoherence?
I am quite familiar with the concept of decoherence, and I heard that a system that has decohered could recohere after that, I was wondering what could cause the the coherences that have leaked into ...
4
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1answer
141 views
Do black holes play a role in quantum decoherence?
Sorry for such a vague question but I could have sworn I read somewhere that Hawking proposed the reason we might see a classically appearing universe is due to the possible role of black holes in ...
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1answer
157 views
The effect of Quantum Decoherence on density operators
Suppose we have a qubit in state $| \Psi \rangle = \alpha | 0 \rangle + \beta | 1 \rangle$
Suppose we expose this to decoherence, which we will express as the state $| R \rangle$ such that
$$| 0 ...
3
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0answers
79 views
+100
Is the preferred basis problem solved?
Once and for all: Is the preferred basis problem in the Everettian Interpretation of QM considered solved by decoherence or not?
THere are a few people who claim that it's not, but it seems the vast ...
2
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2answers
180 views
Quantum Decoherence and Macroscopic Phenomena
I don't really know what quantum decoherence is, but I have heard that it is used to explain why macroscopic objects do not seemingly follow quantum dynamics. Could someone please give a simple ...
2
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1answer
305 views
What is quantum decoherence?
There is some part called quantum decoherence, and I am not sure why it is so sophisticated area. (according to the definition I see, what it seems to say is some probability turning into what we ...
2
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0answers
119 views
quantum field theoretic models of decoherence
I am interested in whether there is a field theoretic description (there is, so what is it?) of the tensor product (aka density matrix) model of open quantum systems. In particular, I am interested in ...
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5answers
211 views
Open quantum systems and measuring devices
The Copenhagen interpretation by Niels Bohr insists that quantum systems do not exist independently of the measuring apparatus but only comes into being by the process of measurement itself. It is ...
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3answers
238 views
Decoherence and collapse
It is said that the decoherence does not solve the problem of measurement and/or the emergence of classicality, can somebody explain it with simple analogies or in a manner accessible to a ...
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1answer
83 views
How are quantum phenomena in atoms and molecules protected against decoherence?
It became widely accepted that quantum effects don't show up in macroscopic objects due to the process of decoherence, in which the interaction with the enormous number of degrees of freedom of the ...
1
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1answer
47 views
In which way is decoherence not symmetric between the two considered systems?
If a quantum system interacts with a "big" quantum system, you have dephasing.
The models of decoherence all have this atog aproach to them, about what is to understood of the interaction of the ...
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3answers
158 views
At what time exactly does decoherence happen? and retrodating
Take a qubit initialized to $|0\rangle$. Apply a Hadamard transform to it. Measure it with an apparatus along the $|0\rangle,\, |1\rangle$ basis. If zero, spare a living cat. If 1, kill the cat. ...
0
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1answer
85 views
Books to study quantum thermodynamics and quantum decoherence [duplicate]
Possible Duplicate:
Book recommendations
My friend is having a hard time finding books to self-study quantum thermodynamics and quantum decoherence.
(search on amaxon would bring almost no ...
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0answers
28 views
fast quantum random number generator + limited decoherence rate => Schrödinger cat state?
Suppose that fast quantum random number generator (QRNG, https://qrng.physik.hu-berlin.de/) is placed in a subsystem which has limited interaction with
the rest of the world. What would happen if ...
