sol invictus
Philosopher
- Joined
- Oct 21, 2007
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Basically a wave-packet can only be a solution of a many-body wave equation: i.e. the superposition of many waves each of which is in essence an electron-wave and thus has a rest-mass. When you solve the single particle wave equation, you do get a spectrum of possible solutions: But only one of them can be a solution for a single particle wave equation. It makes no sense to assume that the other possible solutions can be superposed to obtain a wave-packet since they do not really exist unless they are each representing an additional electron.
Just FYI RC, this is total nonsense. All solutions to the Schrodinger equation of the type we've been discussing represent a single electron. The only condition they need to satisfy is that they be normalizable (that the integral over space of the square of the absolute value of the wavefunction be equal to 1). Any such wavefunction represents a state with total charge e, never 2e or 3e.
A two-electron wavefunction looks completely different - it is a function of two sets of spatial variables (x1,y1,z1) and (x2, y2, z2) (one for each electron). It satisfies a different equation - the SE but with derivatives taken with respect to both sets of variables, not just one. It satisfies a different normalizability condition. And it must have certain properties that don't even make sense for a single particle wavefunction - by the spin-statistics/Pauli exclusion principle for example the two-electron WF must be odd under interchange of the two sets of coordinates.
As for the energy: the SE is the non-relativistic limit of a relativistic theory in which electrons and positrons can be created and destroyed. In the relativistic theory therefore, the number of particles is something that can vary depending on the state. But in the NR limit, the particles have a kinetic energy which is much less than their rest mass energy mc^2. Therefore there is not enough energy to create an electron-positron pair and change the particle number, and so NR wavefunctions represent a strictly fixed number of particles (which is one in the case of the WFs discussed in this thread). As such, the total rest mass energy is an absolutely fixed constant. One can include it in the energy, but it has no effect at all (constants added to the energy do not affect non-gravitational physics).
Bear in mind that all of this is a basic part of the best-tested theory in the history of humanity. What Johan is saying is absolutely ruled out by a century of the most precise and careful experiments ever performed, done in an incredible variety of circumstances.
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