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The original paper by P.W. Anderson presents the infrared orthogonality catastrophe for the fermionic many-body system in the presence of local scattering potential, e.g. $V(r)=delta(r)$....
Asked on 12/17/2020 by MKM
1 answerMy understanding so far: given a small flow moving forward within a larger stationary body of water, the water ahead would pile up, creating hydrostatic pressure in all 2d directions...
Asked on 12/17/2020 by hyperpallium
1 answerWhen velocity of charge particle is neither parallel nor perpendicular to magnetic field, it follows a helical path (in uniform magnetic field). But can someone explain the magnetic bottle concept?...
Asked on 12/17/2020 by Yukti
0 answerIn a Classical Mechanics book I found the assumption that for an arbitrary particle with constant mass in the Real line $dT/dx=0$, with T the Kinetic Energy i.e. ...
Asked on 12/17/2020 by Matias Haeussler
1 answerCan anyone show me a proof that the torque on an arbitrary shaped object having a dipole moment $vec{P}$ in a uniform electric field $vec{E}$ is given by...
Asked on 12/16/2020
1 answerWhat I am trying to do is to compute the specific heat of a free electron gas in a conducting metal. I am using Fermi-Dirac statistics as my framework to...
Asked on 12/16/2020
1 answerI was wondering how the AdS/CFT correspondence fits in the context of integrability. As I understand, the AdS/CFT correspondence postulates a duality between gravity theories and CFT's. If one theory...
Asked on 12/16/2020 by IanDsouza
2 answerWhen working with discretized QFT one moslty works with the Finite Difference Method (FDM) on the hypercubic lattice, and the fields live on sites, links, faces ... of the lattice....
Asked on 12/16/2020
0 answerI am confused about a sentence in Polchinski's String theory chapter 8 p 255 when he works out the example of the full $T$-duality with two compact dimensions. He...
Asked on 12/16/2020 by Oбжорoв
1 answerSomeone told me: This is because the flow rate remains unchanged, so the flow rate of small diameter pipelines is faster.I don't think this explanation is right: the diameter...
Asked on 12/16/2020
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