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I am trying to numerically compute the Berry Curvature for a generic quadratic Bosonic Hamiltonian of the form $$H = sum_{ij} A_{ij} b_{i}^dagger b_j + frac{1}{2} sum_{ij}left( B_{ij} b_i...
Asked on 12/12/2020 by user138458
2 answerI was thinking and I have this question,entangled pairs of particles collapse at the same time. Knowing this, could we measure the one way speed of light by having...
Asked on 12/12/2020 by IronicalCoffee
1 answerA wedge of mass $M$ is kept on a spring balance. A small block of mass $m$ can move along the frictionless incline of the wedge. What is...
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4 answerI am trying to write down the PDE problem of cooling a square plate from 100 degrees. The air(25 degress) around the...
Asked on 12/12/2020
1 answerIn Dirac's Principles of QM following is stated: $$langle x | A + B | x rangle = langle x | A | x rangle + langle x...
Asked on 12/12/2020 by NewStudent
2 answerI am trying to derive Birkhoff's theorem in GR as an exercise: a spherically symmetric gravitational field is static in the vacuum area. I managed to prove...
Asked on 12/12/2020 by toot
2 answerIn a LED the electrons in the n-type move to the p-type where they are then 'combined' with the holes in the valence shell of the p-type which produces photons....
Asked on 12/12/2020
2 answerWhat does the plot of multiplicity, W, and the natural log of multiplicity, ln(W), look like as a function of N, the number of molecules in the system? This was...
Asked on 12/12/2020 by Math Loser
0 answerGiven the blackhole temperature formula, $$T =frac{hbar c^3}{8pi k_BGM},$$ can I use $M=E/c^2$ (where $M$ is the mass of the Blackhole) to invert the above equation to...
Asked on 12/12/2020
0 answerThe energy of an object is the sum of the kinetic and internal energies. When a hair dryer heat up its coils, it transfer energy to air molecule via...
Asked on 12/12/2020
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