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I am following Classical and Quantum Mechanics via Lie Algebras by Neumaier and Westra.SetupI am stuck at part of Thm 2.3.1. Consider the matrix group $mathbb{G}$....
Asked on 12/20/2020 by jgerber
1 answerMost often we think of photons mediating a force between charged particles (e.g. electrons and positrons), and it's a standard exercise in QFT to do the computation and find that,...
Asked on 12/20/2020 by Alex Meiburg
1 answerLet's forget how and go straight to the beef and potatoes. What do you scientifically call it when a plasma turns to liquid and skips recombination, and/or condensation? What about...
Asked on 12/20/2020 by Camo_man
1 answerClassical mechanics is famous for its supposed ability to theoretically calculate the state of a system at any given time provided all the necessary initial conditions. I believe this is...
Asked on 12/20/2020 by Arc DDD
6 answerI am trying to understand the steps for numerically diagonalizing the Hamiltonian for an amplitude modulated lattice. I am trying to follow along with the calculations in section 4.6...
Asked on 12/20/2020 by yankeefan11
0 answerI am seeking the minimum eigenvalue and the eigenfunction of the following Hamiltonian on interval $[0,1]$; $$hat{P}^2+ c hat{Q}^{-1} + c (I-hat{Q})^{-1}$$ where $c $ is an...
Asked on 12/20/2020 by Masahito Hayashi
0 answerWhen we move an electron(e1) towards another electron(e2, not fixed), the work we do is stored as potential energy in e1 but from where does e2 get energy to be...
Asked on 12/20/2020
2 answerI am a bit confused about neutrinos in the standard model. The vertex of the weak interaction charged current, implies that any neutrino interacting through the charged current must be...
Asked on 12/20/2020
1 answerIgnoring the fact that we would be torn apart by gravitational gradient and assuming we get some time to make some observations before hitting singularity, what would we see looking...
Asked on 12/20/2020 by thokiro
6 answerA wedge of mass M lies on a smooth horizontal plane while a block of mass $:m=M/2:$ is in contact with the smooth inclined face of the wedge . The...
Asked on 12/20/2020 by Jane dew
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