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A. Neumaier
#14
May2-11, 09:09 AM
Sci Advisor
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Quote Quote by A. Neumaier View Post
An electron behaves as a particle only in situations where an approximate semiclassical description is applicable. This is _not_ the case for a tightly bound electron such as in an ordinary atom or molecule, but it is often the case for an electron in a beam, when one doesn't aske too detailed questions. (Electron beams in full generality are treated in electron optics, where the Dirac equation is treated as a classical field.)

Depending on the preparation, you may regard it as a particle before it passes the screen, but afterwards no longer - passing the screen turns the electron into a delocalized object - the more delocalized the further away from the slits.

Indeed. There is no quantum mystery.

Not as a fundamental quantum law. But the Born rule has limited validity, which can be discussed in the framework of the thermal interpretation.

Talking about it hear is the first part of spreading it. I am gathering experience in how people respond and what must be said to make the case. For publishing it, the Scientific American is not the right place - this is a journal for expaining things to the interested public, not for describing new results to the scientific community.

But sooner or later, my thermal interpretation will be published - a full, convincing account of it is not written in a few pages, but takes time.

And in 10 years time, it will be the consensus of the scientific community, since unlike with all other interpretations, there is nothing weird about the thermal interpretation.
Quote Quote by Varon View Post
Let us focus on the double slit experiment as Feymann said it's the main mystery. If it's solved, the entire quantum mystery solved.

I can't understand what you meant by "passing the screen turns the electron into a delocalized object". You said the electron is a particle before it passes the screen. Since it is already a particle, how can it turned into a delocalized particle at the screen?
The electron is always a quantum field. The quantum field can be regarded to describe a particle if and only if the field has a nonzero expectation only in a region small compared to the whole system considered. Thus we may say that the field is a particle as long as this condition is satisfied. Because of the dispersion of the field caused by the slits, this condition stops to be satisfied almost immediately after the field (with support large enough to cover both slits) passed the double slit. Thus it is no longer justified to talk about a particle.

The situation is similar as with a sphere of glass. If you throw it, you may regard it as a particle. But if it hits an obstacle and fragmentizes, it is no longer localized enogh to deserve the name of a particle.
Quote Quote by Varon View Post

Let's go from the beginner in the emission. So the electron is emitted. You believed it travels as particle? But where does it pass, the left or right slit? And what caused the interferences in the screen. Standard explanation says it interferes with itself because it is a wave after it is emitted.. and only become a particle at the detection screen. Pls. elaborate what happened to your electron after emission.. before it reaches the slits.. after it exits the slits and after detection in the screen.
The field passes the doulbe slit in a fashion similar as a water wave would do, except with quantum corrections.