Physics
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Cuntista
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All Questions Answers
Score Newest
answer
4
Derivation of the quadratic form of the Dirac equation
May 16, 2020
question
2
Evaluating $\sigma^{\mu\nu}F_{\mu\nu}=i\alpha \cdot E+\Sigma\cdot B$ matrix, spin dependent term in quadratic Dirac equation
May 18, 2020
answer
2
Angular velocity definition
Sep 19
answer
2
Why are eigenvectors of the density matrix orthogonal pure states?
Oct 27
answer
2
Why decreasing the distance between a parallel plate capacitor increases the electric field? Wouldn't it remain the same? $\sigma/\epsilon_0 $?
Dec 5
question
1
Relativistic invariants of a classical field in 4D fashion: why the relation between the components of the current density holds?
Sep 19, 2022
question
1
Is really hermiticity necessary to be a physical observable? What about larger class of operators like PT invariant operators or pseudo hermitian one?
Sep 26
question
1
If the curl of the gradient is always zero why isn't it in vorticity definition? Kosterlitz - Thouless - Berezinsky topological transition
Nov 12
question
1
Wick rotation and Exponential mapping of an "imaginary" differential operator acting on a real-valued wavefunction
Nov 26
question
1
Relation beteen harmonic polynomials and spherical harmonics
Dec 4

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