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I was curious about the following point: let's say we have a left circularly polarized light wavepacket travelling from left to right. We will call its polarization vector $epsilon_{L}$...
Asked on 12/08/2020 by Yepman
0 answerWhen we put two bodies with different temperatures in contact, there will be a heat transference between them. The variation of the entropy of the system is well known (this...
Asked on 12/08/2020
2 answerI am trying to find a formula that would allow me to calculate the Spin Axis based on the Back and Side Spin of a Golf Ball. Given the Back...
Asked on 12/08/2020 by Daniel Camargo
0 answerI am trying to create a simulation to simulate a vehicle's tire using Pacejka's Magic Formula. From what I understand, the formula calculates the longitudinal force that the tire will...
Asked on 12/08/2020 by angelo234
1 answerIt is common in QED that electron positron pair can scatter into different lepton family such as muon and antimuon pair. Is it possible that two energetic electrons can scatter...
Asked on 12/08/2020
2 answerThe field action in flat spacetime is$$ S = int d^4x, mathcal{L}(phi,partial_muphi).tag{1} $$ The variation in $S$ leads to$$ delta S = int d^4x, delta mathcal{L}. tag{2} $$...
Asked on 12/08/2020
2 answerAs we observe a remote galaxy, we see it with a redshift. The most distant galaxy discovered to date is GN-z11 visible with the redshift of $z=11.09$. For simplicity, let's...
Asked on 12/08/2020
4 answerIf you release an air bubble sufficiently far under the surface of water, what is the terminal velocity of the bubble that is created? Is the terminal velocity contant or...
Asked on 12/08/2020
0 answerHow to show that $sum |c_{n}|^{2} = 1$ ? Where, $psi = sum <c_{n}|e_{n}>$ (completeness) and $e_{n}$ are the eigenvectors of the general operator $Q$ (with...
Asked on 12/08/2020
4 answerI want to integrate out the bosonic fields $d_{dcl,q}$ in my problem to obtain an effective action for my $c$ fields. For explanation, I wrote the Keldysh fields...
Asked on 12/08/2020 by Nils
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