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I'm working on the Eq.9.77 in Peskin (page 304):To demonstrate this, we need only apply standard identities from linear algebra. First notice that, if a matrix $B$ has...
Asked on 02/11/2021 by sky
2 answerIn the classical incorrect 'billiard ball' model of the atom, electrons are often drawn as smaller balls than the protons and neutrons in the nucleus. However from quantum mechanics we...
Asked on 02/11/2021
3 answerWhat does it mean to have E or 3A2 energy levels in diamond? For some reason it doesnt conclude with spectroscopic notation found in the Internet. The question in specific...
Asked on 02/11/2021 by F66
0 answerI am interested in a square lattice with the vertical magnetic field. Without a magnetic field, we can know the energy dispersion of the square lattice easily. But, how about...
Asked on 02/11/2021 by Sakurai.JJ
1 answerIn my physics-class, I was told that, "The melting point of the same substance changes under different pressure. But it can change in two different manner" There are 2 different...
Asked on 02/11/2021
1 answerI was conducting an experiment to see if my sink faucet is flammable. I did this by putting a lighter near a running facet. My first guess was that the...
Asked on 02/11/2021 by Goku223344
2 answerUsually when the Fermi's golden rule is derived using time-dependent perturbation theory, the notation suggests that the system under consideration has discrete spectrum (quantum harmonic oscillator, infinite square well etc.)....
Asked on 02/11/2021
0 answerConsider two point masses separated by a large distance R so that their initial potential energy can be considered 0. They are both at rest with respect to the Centre...
Asked on 02/11/2021 by Shikhin Mehrotra
1 answerThe energy of a free (nearly free) electron in a solid (say, metals) is given by $E=h^2k^2/2m$ where k is the momentum vector, h is Planck's constant...
Asked on 02/11/2021 by Shaona Bose
0 answerWhat is the significance of converting aircraft body axis velocity components into earth axis to relate the same with airspeed (Measured from Pitot tube)? Thanks in advance......
Asked on 02/11/2021 by S.Prabhu
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