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


6h
reviewed Reviewed Why GPS is at LEO?
20h
reviewed Approve suggested edit on When a planet is heated through gravitational pull, where is the energy taken from?
1d
reviewed No Action Needed Realisation of arbitrary controlled quantum gate
1d
reviewed Approve suggested edit on Why does a conservative force return the work done against it by a body to that body?
1d
reviewed Reviewed Relation between the conservation of Energy and the conservation of Momentum?
2d
reviewed Reviewed Theory on what would happen if a proton touches anouther
2d
reviewed No Action Needed Correlation between Bohr-model and quantum physics
2d
reviewed Approve suggested edit on Is the Big Bang defined as before or after Inflation?
2d
reviewed Reviewed What makes some laser beams visible and other laser beams invisible?
2d
comment What makes some laser beams visible and other laser beams invisible?
This does not provide a real answer to the question - what makes some laser beams visible and others not. You do touch on important ideas (impurities) - maybe you could expand on this?
Oct
19
answered Example of a state which is positive but its partial transpose is not positive
Oct
18
reviewed No Action Needed Why is Energy = Voltage x Charge, and how to prove that?
Oct
17
comment Uniqueness of representing POVM using projective measurement
I feel that the answer should be "no" as per the dictum (see e.g. Nielsen Chuang) that a general POVM doesn't lead to a meaningful "post measurement state". If for every dilation, you'd have the same post measurement state, at first glance, this would be a good way to define such a state. Obviously that's not a proof, I'll have to think some more...
Oct
17
reviewed Approve suggested edit on Why is there $1/2\pi$ in $\int\frac{dp}{2\pi}|p\rangle\langle p|$?
Oct
17
comment How is antimatter made?
Please have a look at pair production en.wikipedia.org/wiki/Pair_production and then specify your question.
Oct
17
reviewed Reviewed Angular velocity and linear velocity
Oct
17
comment Angular velocity and linear velocity
At least to me, it's unclear what you are asking. Note that questions should be about specific physics concepts and show reasonable prior research. What experiment have you done? What exactly do you not understand?
Oct
17
reviewed No Action Needed Massive gauge string sigma model action
Oct
17
reviewed Approve suggested edit on Why don't free electrons fall from metals if shaken?
Oct
17
reviewed Reviewed Adams-Moulton and BDF methods