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I'm working on creating a pool of physics questions for my students, and I came up with one whose solution made me stop and think. I'm not asking for checking/proofing...
Asked on 07/05/2021
2 answerI believe the best way to sum up the idea of observers used in almost all treatments of standard Special Relativity is what Schutz says in his General Relativity book:It...
Asked on 07/05/2021
3 answerI am trying to understand how we get the Einsteins equations in here section 4.1 equation 4.2 where we use the metric$$ds^2 = a^2(z)(dz^2+dx^mu...
Asked on 07/05/2021 by chillyspangko
1 answerWhat do we mean by the statement when we say that a cavity mode is driven by a classical field or classically controlled field, in Cavity Optomechanics?...
Asked on 07/05/2021
1 answerI'm not a physicist but I'm interested in unified theories, and I do not know how to start learning about it. What would be a good book to...
Asked on 07/05/2021 by fronthem
4 answerI once recognized that when you light two candles and you move one of the candles towards the other, you will see that the total fire height (let's call it...
Asked on 07/05/2021 by Montaigne
1 answerI was reading the Schrodinger's famous 1926 paper, and he introduces his Schrodinger's equation as a real second-order in time equation (I modified it a bit)...
Asked on 07/05/2021
1 answerI'd like to derive the equations of motion for a scalar field in a FLRW universe, where the metric, as well as the field, are perturbed. I think I should...
Asked on 07/05/2021
0 answerI am reading this paper "Quantum Raychaudhuri equation" by S.Das. In this paper, the author derives a quantum version of the Raychaudhuri equation which has nice implication...
Asked on 07/05/2021
0 answerI want to understand the paper which belongs to Ludwig (I put it below). I do not understand why exactly he got the new space $U(m+n)/U(m) times U(n)$. My...
Asked on 07/05/2021 by Bahar Jafari Zadeh
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