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Hello, this is the solution for the effect of a...
Asked on 01/04/2021 by mehmet kaplan
0 answerIn Peskin and Shroeder, "An Introduction to Quantum Field theory", chapter 4, the author derives the 2 point correlation function: $$langle Omega|P{phi(x)phi(y)}|Omega rangle = lim_{Trightarrow infty(1-iepsilon)} frac{langle 0|P...
Asked on 01/04/2021
1 answerSay we have a particle in an infinite square well where $V= infty$ if $x<0$ or $x>a$. Then, suppose the well expanded to $V= infty$ if...
Asked on 01/04/2021 by JChang
1 answerIn this paper1 the following bandstructure of Bi$_2$Se$_3$ is shown: In "a" they show the bands without...
Asked on 01/04/2021
2 answerI have heard of the fact (see e.g. here) that there exists no everywhere-regular Hadamard (vacuum) state for quantum field in Kerr spacetime. My understanding is that...
Asked on 01/04/2021 by Everiana
0 answerFor continuous mass distribution they introduce linear, surface and volume mass density (represented by $lambda$, $sigma$ and $rho$ constants). I just want to know what they mean....
Asked on 01/04/2021
3 answerI follow Zee, 2 ed., Appendix to Section II.6. I have implemented a big box normalization to impose momentum quantization on my meson field. Using $ tilde{a}...
Asked on 01/03/2021 by hodop smith
1 answerCan someone explain for me in detail what causes a car to pull off with a wheelie. I know that there is a lot of g force on the rear...
Asked on 01/03/2021 by MrBrN197
1 answerI have this scenariosuppose a cylinder is made by joining two symmetrical cones and is given a gentle push on two rails A and B . What will be the...
Asked on 01/03/2021
2 answerI've been working on a mechanics question recently and getting a bit stuck on it. The question isif we have a Maxwell disc of radius $R$ and mass $M$ connected...
Asked on 01/03/2021 by user352879
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