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Herr_Mitesch

Apparently, this user prefers to keep an air of mystery about them.

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  • Member for 4 years, 2 months
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Top posts (21) All Questions Answers | Votes Newest

7 How do you find the projection operator onto an eigenspace if you don't know the eigenvector? May 5 '15
6 How can the expected value $\left<x\right>$ of a given state in an harmonic oscillator differ from $0$? Mar 5 '18
3 Is it possible to write the fermionic quantum harmonic oscillator using $P$ and $X$? May 20 '15
2 The poles of Feynman propagator in position space May 2 '15
2 Recurrence differential equations May 2 '15
2 Find Eigenstates of a Hamiltonian that lets two spin 1/2 interact but also acts on one of them May 20 '15
2 What is the physical meaning of Hamiltonian eigenstates for a single particle? Jan 7
2 Derivation of Schwingers action principle from Heisenberg Equation and CCR - Why does it work with Anticommuting variations? Nov 7 '17
1 Showing the form of the covariant derivative of $\phi$, if $\phi$ transforms as the adjoint representation of $SU(n)$ Apr 8
1 Variation in field theory with respect to one quantity Apr 11
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