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When studying different interactions in any QFT, one always assumes that the IN and OUT states are asymptotically free particles with definite momenta. For example, one assumes that an electron...
Asked on 11/28/2020 by AlanR
2 answerFirst, I understand triangles and trigonometry(I think!), so that's not the issue. The question is more of a conceptual one. How can it be that a force has components whose...
Asked on 11/28/2020 by David R
1 answerI've got a BSc in Physics and passed all courses on classical mechanics, but whenever I have to face a problem concerning circular motion, I don't know why, but I'm...
Asked on 11/28/2020 by Kim Dong
1 answerI was looking at a straight forward answer on internet which I am unable to find. Can there be a strong interaction in which transformation of one quark flavour...
Asked on 11/28/2020 by kuzk34
1 answerSince a geo stationary satellite appears to be at rest form earth, should not the net force acting on the satellite equal to $0$. Now since earth is...
Asked on 11/28/2020 by Sameer nilkhan
2 answerI having difficulty wrapping my head around a concept that I wish to solve. There exists a 10L tank of compressed air at 100psi. When an outlet hole of cross-sectional...
Asked on 11/28/2020 by ab042896
2 answerI wonder if there is any difference between these two terms. Is transverse conductivity always equal to Hall's conductivity? I am asking in the context of the thermal and electrical...
Asked on 11/28/2020
1 answerTwo particles P and Q are attached to opposite ends of a light inextensible string which passes over a smallsmooth pulley at the top of a rough plane inclined...
Asked on 11/28/2020 by AOD
1 answerWhen considering an evanescent wave travelling in a region between two regions where the solution takes the form of a travelling wave from the maths we have a forwards travelling...
Asked on 11/28/2020 by Goods
2 answerThe following expectation of a time ordered exponential is easy to work with:$$ leftlangle n right| T leftlbrace e^{-i int_{t_1}^{t_2} V_A(t’)dt’ }rightrbrace T leftlbrace e^{-i...
Asked on 11/27/2020 by TheDumbGuy
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