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I am new to quantum physics. We just learnt about wave equations, observables and expectation values today. What really caught my attention was the expectation value of average momentum and...
Asked on 06/08/2021 by Smriti Sivakumar
1 answerAll textbooks I've come across have the same way of proving the mirror formula. Everything makes sense, except the fact that they apply the sign convention once to obtain the...
Asked on 06/08/2021 by Kunal Pawar
1 answerIf antimatter is stored regularly - such as an anti hydrogen atom - it's stored using magnets to hold it in place in a vacuum to prevent it from annihilating....
Asked on 06/08/2021 by scratchfan321
0 answerI am trying to figure out the Feynman diagram for the fully hadronic $K^+$ meson decay $K^+ rightarrow pi^+ + pi^0$. I have drawn out my attempt below,...
Asked on 06/08/2021
2 answerSay we have a straight wire connected across two terminals carrying electricity between them. If everything is kept the same (voltage across the two terminals, resistance of the wire, etc.)...
Asked on 06/08/2021 by a3y3
1 answerWe know that the asymptotic symmetry of AdS$_3$ is the Virasoro symmetry, which is infinite dimensional. For flat spacetimes, the BMS group is also infinite dimensional. So are all the...
Asked on 06/08/2021 by Nahc
1 answerI was solving a question and trying to find the potential difference between two points and got confused with the signs . We know $$dV = -E.dr .$$...
Asked on 06/08/2021 by Niescte
2 answerBelow is normal example that is generally given for loss of simultaneity in relativity A person (A) is on platform. Another person (B) is travelling in train (moving...
Asked on 06/08/2021
3 answerI remember that there exists a demonstration showing that this time is actually infinite, but I cannot find it. We have a potential $V(x)$ that has a local max,...
Asked on 06/08/2021 by Luis Alberto Rodríguez Chacón
0 answerWhat's the physical meaning of transpose of a matrix in Quantum Mechanics? Although for Unitary or Orthogonal operators, I know that transpose of that operator would reverse the action...
Asked on 06/08/2021 by The_Lazy_Panda
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