1,156 reputation
114
bio website
location
age
visits member for 6 months
seen 20 hours ago

I'm a mathematical physicist in training working primarily on questions concerning quantum information and general quantum mechanics.


Apr
8
reviewed No Action Needed The skin effect and the reflectivity of gold
Apr
8
comment What is fidelity in experimental QM?
No it doesn't. It's a distance measure for quantum states (not a metric). See e.g. here: en.wikipedia.org/wiki/Fidelity_of_quantum_states
Apr
6
reviewed No Action Needed Will an anti-neutron annihilate a regular neutron even though they have no charge
Apr
6
comment Are there any QM effects where charged particles are not intimately involved?
Thanks - my writing was a bit imprecise, I meant "electric charge" of course.
Apr
5
answered Are there any QM effects where charged particles are not intimately involved?
Apr
5
reviewed No Action Needed Why do objects fall at the same acceleration?
Apr
5
reviewed Reviewed How can water evaporate at room temperature?
Apr
4
awarded  Mortarboard
Apr
4
answered Physically realizable quantum circuits
Apr
4
awarded  Nice Answer
Apr
4
comment Why does Matter occupies space? Matter and space are two things… If Space does not has mass, why should matter have space-ful nature?
That's what I'm saying. An electron is believed to have no spatial extend. No elementary particle has such extend. However, since they are charged, where there is an electron, other electrons will most likely be further away - in a bound state like around an Atom, you can even calculate where the electrons will be and this space seems to be "occupied". A proton, which is not elementary, appears to have an extend because of the various forces.
Apr
4
comment Why does Matter occupies space? Matter and space are two things… If Space does not has mass, why should matter have space-ful nature?
"elementary particles" are those particles, which we believe to be undivisible, i.e. electrons seem to be elementary, protons aren't (see also Wikipedia). Your definition of 'matter' as anything not 'space' is not very good, since it precludes an answer to your question: when matter is not space, then it can't occupy space, since wherever it is, there is no space.
Apr
4
comment Why is superdeterminism generally regarded as a joke?
If superdeterminism is the reality, we may never know. But if we can't find out, it's futile to muse about it outside philosophy. Basically, you just propose a different ontic model (which people don't like, because they like to think they can find out everything), but whose truth cannot be probed. I'd really go to the philosophers with this, they can tell you more about the differences between epistemology and ontology and how this might be important with your question, my knowledge there is pretty shaky!
Apr
4
comment Why is superdeterminism generally regarded as a joke?
let's say I'm a scientist and I want to know things about the universe. Let's also say that I want to know what "reality" is. Then, my first assumption should be that I can actually get to know these things. If this assumption is wrong, my conclusions will be faulty. This doesn't "invalidate" science (you misunderstood me there), it just means that I didn't do what I thought I did, because of faulty assumptions - the experiments will of course still show me something about the universe. What Bell's theorem tells us is that superdeterminisms must in a way hide from us.
Apr
4
answered Why is superdeterminism generally regarded as a joke?
Apr
3
answered Why does Matter occupies space? Matter and space are two things… If Space does not has mass, why should matter have space-ful nature?
Apr
1
reviewed No Action Needed Could CP violation be exploited to violate the second law?
Apr
1
revised Design a quantum circuit from a matrix
different tag
Apr
1
comment Design a quantum circuit from a matrix
As far as I know, there is no such thing - the branch of interest is sometimes called "quantum compiling". A method you could look into is the cosine-sine decomposition, but I don't have a good link...
Apr
1
suggested suggested edit on Design a quantum circuit from a matrix