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Objective: Show that $$int^{infty}_{-infty} x e^{-x^2} H_n(x) H_m(x) dx = pi^{1/2} 2^{n-1} n! delta_{m,n-1} + pi^{1/2} 2^n (n+1)! delta_{m,n+1}$$ My attempt at this is:begin{eqnarray*}sum^infty_{n=0}...
Asked on 01/08/2021
1 answerConsider the system above ($m_1$, $m_2$, and $m_3$ are connected by springs of stiffnesses $k_1$ and ...
Asked on 01/07/2021 by miniplanck
2 answerWe are asked to find the all the states in the system given by two identical fermions on a circle only in terms of the Grassmann formalism. Furthermore, we have...
Asked on 01/07/2021 by BrazyOski
0 answerIn an exam, I am given a situation where a student investigates how the current varies with potential difference for two bulbs of the same type. For the same voltage,...
Asked on 01/07/2021 by code noob
2 answerI'm having a difficulty deriving hydrostatic pressure.To be specific, I don't understand this image from Wikipedia: How does the fluid...
Asked on 01/07/2021 by user142405
3 answerOk, I don't think I did a good job of communicating this, so here's a better way to phrase the experiment. There is a spaceship traveling horizontally in the x-direction...
Asked on 01/07/2021
2 answerIs there any study about the DMRG simulation of such kind of systems? or ...
Asked on 01/07/2021
0 answerWith matter a type of energy, can/should the universe be considered a thermodynamic system? At what scale would it be relevant?...
Asked on 01/07/2021
3 answerI look for a rigorous mathematical explanation of so-called Shapiro steps in Josephson junctions, the AC phenomenon of current jumps at specific values of voltage as presented in the picture...
Asked on 01/07/2021 by Olexot
0 answerI just want to make sure I understand what I am doing. Let me write down how I think things should work, and please spot any mistake in my thought...
Asked on 01/07/2021
0 answerGet help from others!
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