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I am reading this parer Majorana Corner Modes in a High-Temperature Platform,The Bogoliubov–deGennes Hamiltonian is : $hat{H}=sum_{k}Psi^dagger_kH(vec{k})Psi_k$with $Psi_k=(c_{a,kuparrow},c_{b,kuparrow},c_{a,kdownarrow},c_{b,kdownarrow},c_{a,-kuparrow}^dagger,c_{b,-kuparrow}^dagger,c_{a,-kdownarrow}^dagger,c_{b,-kdownarrow}^dagger)$and Hamiltonian is $H(vec{k})=M(vec{k})sigma_ztau_z+A_xsin(k_x)sigma_xs_z+A_ysin(k_y)sigma_ytau_z+Delta(vec{k})s_ytau_y-mutau_z$. All...
Asked on 08/26/2021 by YuXuanLi
1 answerI am currently looking at "Physical aspect of space-time torsion" by IL Shapiro. There in eq. 2.10, it mentions that in space-time with torsion the commutator of covariant derivatives acting...
Asked on 08/26/2021
2 answerAssume that the wave function of a particle in a one-dimensional rigid box of length L$(V=0$ between $x=0$ and $x=L$ and $V=+infty$ elsewhere) at time...
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1 answerDuring the review of some EM exercises I stumbled over a very interesting problem I just can't find the solution for. Suppose we are looking at a waveguide with side...
Asked on 08/26/2021 by MLK
1 answerI am trying to understand physically why the air molecules at the nodes of a standing sound wave move around the least. Is it because they act like springs? So...
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1 answerI wanted to consider a second case of my homework assignment. We were asked to solve the question: A uniform rod of length b stands vertically upright on a horizontal...
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2 answerFrom what I know:The magnetic field strength, $vec{H}$, is the field generated by a free current flowing on an electric conductor.The magnetic flux density, $vec{B}$, is a response...
Asked on 08/26/2021
2 answerWarning: please, consider this question to be motivated by historical curiosity or as an exercise in model-building. I believe this cannot be considered non-mainstream physics as it was very...
Asked on 08/26/2021 by Andrii Magalich
2 answerI am trying to solve the following advection-diffusion equation for transient flow conditions for radial flow. The governing equation is as follows.$$frac{partial T}{partial t} = frac{partial^2 T}{partial x^2}...
Asked on 08/26/2021 by Petroleum Engineer
0 answerI assumed the Sommerfeld radiation condition which is satisfied by radiating solutions to the Helmholtz equation ensured that a wave decays to zero as the wave becomes infinitely far from...
Asked on 08/26/2021 by ManUtdBloke
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