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considering $L$ is always greater than $L_z$ i.e angle between angular momentum/magnetic moment and magnetic field/z direction cannot be zero. Means $B$ and magnetic moment cannot...
Asked on 12/25/2020 by Mubashir
1 answerI'm listening to Alain Connes "On the Fine-Structure of Space-Time" around minute 23saying that it was disappoing that the solution Y to the equation $$...
Asked on 12/25/2020 by Xlsx2020
1 answerI'm currently reading through Griffiths Electrodynamics 4ed and I'm struggling with problem 2.38c (see attached picture of question and solution). I get that, using his statement that the potential goes...
Asked on 12/25/2020
1 answerMy starting point: If one takes the magnetic dipole of the electrons and not the spin as the starting point for explaining the phenomenon of Bose/Einstein condensates, one can imagine...
Asked on 12/25/2020
2 answerBackground: I am an upper level undergraduate physics student who just completed a course in classical mechanics, concluding with Lagrangian Mechanics and Hamilton's Variational Principle. My professor gave...
Asked on 12/25/2020 by Sigma
2 answerHi I am going through Fetter's Quantum Theory of Many-Particle Systems Dover Edition. In ch. 31 he computed the relation between $bar{G}(mathbf{k},omega)$, ${bar{G}}^{R}(mathbf{k},omega)$ and $bar{G}^{A}(mathbf{k},omega)$ where each...
Asked on 12/25/2020
0 answerI was working on Ampere law questions and starting thinking. If the attractive force of two parallel current carrying wires was strong enough, could the two wires actually touch? Or...
Asked on 12/24/2020
1 answerI'm reading this famous paper about the classification of quantum phases, and I'm wondering about the physical meaning of the definition of phases the authors use. They...
Asked on 12/24/2020 by user2723984
0 answerIn Robert J. Sawyer's sf novel The Oppenheimer Alternative, a bunch of physicists try to find the composition of the martian atmosphere with spectroscopy. They say that to find water...
Asked on 12/24/2020
1 answerWe say that internal energy is a function temperature and volume [ $U(V,T)$], and other times when we use the Gibbs free energy as our potential, we say that...
Asked on 12/24/2020
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