Is Quantum Mechanics Necessary for Understanding Exchange Coupling Mechanism?

Maxwellkid
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how does the exchange coupling mechanism work that produce the ferromagnetic properties of materials?
 
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The standard method is that spin alignment forces the spatial part of the multiparticle wavefunction to be antisymmetric. In particular, there is now a reduced probability of having the particles at the same spatial point, thus lowering the Coulomb repulsion.
 
how much must I know about the strong and weak nuclear force to adequately derive the schrodinger equation using maxwell's equations and QED?
 
Maxwellkid said:
how much must I know about the strong and weak nuclear force to adequately derive the schrodinger equation using maxwell's equations and QED?

nothing. but your post seems completely off topic.
 
are you telling me QED and quantum mechanics has nothing to do with the exchange coupling mechanism?
 
Maxwellkid said:
are you telling me QED and quantum mechanics has nothing to do with the exchange coupling mechanism?

no, I'm telling you that you need to know nothing about the strong and weak force to do what you want to do... which is what you asked.
 
From the BCS theory of superconductivity is well known that the superfluid density smoothly decreases with increasing temperature. Annihilated superfluid carriers become normal and lose their momenta on lattice atoms. So if we induce a persistent supercurrent in a ring below Tc and after that slowly increase the temperature, we must observe a decrease in the actual supercurrent, because the density of electron pairs and total supercurrent momentum decrease. However, this supercurrent...
Hi. I have got question as in title. How can idea of instantaneous dipole moment for atoms like, for example hydrogen be consistent with idea of orbitals? At my level of knowledge London dispersion forces are derived taking into account Bohr model of atom. But we know today that this model is not correct. If it would be correct I understand that at each time electron is at some point at radius at some angle and there is dipole moment at this time from nucleus to electron at orbit. But how...
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