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An infinitely large conducting sheet of thickness $d$ and of conductivity $eta$ is uncharged. At an instant $t=0$,...
Asked on 11/30/2021 by Vilakshan Gupta
2 answerI understand that the origin of atmospheric pressure is the weight of air.Imagine if there is a cylinder consisting of two compartments separated by a frictionless piston filled with...
Asked on 11/30/2021
2 answerWhen discussing the cluster decomposition principle in Vol 1 of his QFT textbooks, Weinberg defines $S_{q'q}^C$ (connected part of the $S$-matrix) for single-particle transitions to just be ...
Asked on 11/30/2021
0 answerIn the lecture https://www.youtube.com/watch?v=-9G54aCkNH0 (or see https://www.theorie.physik.uni-muenchen.de/activities/schools/archiv/asc_school_14/komargodski_notes.pdf for notes), Zohar Komargodski begins by examining the Hamiltonian$$H=frac{1}{2}p_x^2+frac{1}{2}p_y^2+frac{1}{2}lambda^2x^2y^2.$$He argues that for $|x|rightarrowinfty$,...
Asked on 11/30/2021 by Ivan Burbano
0 answerI wanted to consider a second case of my homework assignment. We were asked to solve the question: A uniform rod of length b stands vertically upright on a horizontal...
Asked on 11/28/2021
3 answerWarning: please, consider this question to be motivated by historical curiosity or as an exercise in model-building. I believe this cannot be considered non-mainstream physics as it was very...
Asked on 11/28/2021
2 answerI assumed the Sommerfeld radiation condition which is satisfied by radiating solutions to the Helmholtz equation ensured that a wave decays to zero as the wave becomes infinitely far from...
Asked on 11/28/2021
2 answerI want to see eigenvalue spectrum of Bose-Hubbard Hamiltonian. Can anyone send me the algorithm to write Bose-Hubbard Hamiltonian. ...
Asked on 11/28/2021
1 answerWhy do the red points in the following figure have the same pressure?...
Asked on 11/28/2021
1 answerI'm currently fiddling around with gauge-phase-transformations in Fock space.Especially, I'm trying to write a local gauge-phase-transformation asan operator in a basis-independent way. Here is what I have so...
Asked on 11/28/2021
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