What are the matter wave polarization parameters?

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Discussion Overview

The discussion centers around the concept of polarization in matter waves, exploring whether they can be polarized in ways similar to electromagnetic waves. Participants consider various parameters such as spin and parity in relation to matter wave polarization.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant suggests that electromagnetic waves can be polarized by filtering their electric or magnetic transverse vectors and questions if matter waves can be polarized similarly.
  • Another participant argues that the wavefunction in the Schrödinger equation does not support polarization, comparing matter waves to water waves in this regard.
  • A further response clarifies that the wavefunction \(\Psi\) is a scalar and lacks directionality, implying that it cannot possess polarization like vector fields do.
  • A participant expresses gratitude for the responses and indicates an assumption that the conclusions apply broadly to all forms of matter waves, including single electrons passing through slits.

Areas of Agreement / Disagreement

Participants generally agree that matter waves do not exhibit polarization in the same way as electromagnetic waves, but there is some uncertainty regarding the implications for different types of matter waves.

Contextual Notes

The discussion does not resolve the implications of polarization in various contexts or the potential exceptions that may exist for different types of matter waves.

Greylorn
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E/M waves can be polarized, presumably, by filtering either their electric or magnetic transverse vectors.

What about matter waves? Can they be electrically or magnetically polarized? Can they be polarized with respect to spin, parity, or any other parameter?

That's a lot of explanation, so could someone please point me in the direction of mid-level reference material on the subject? Thanks!
 
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You mean the wavefunction in the Schroedinger equation? No, the structure of the mathematics is such that those waves do not support a polarization. In that regard, they are like water waves.
 
Greylorn said:
E/M waves can be polarized, presumably, by filtering either their electric or magnetic transverse vectors.

What about matter waves?

[itex]\Psi[/itex] is a scalar, not a vector. Its value at a single point has no direction associated with it, unlike the electric and magnetic fields, which are vectors and do have a direction. Therefore a wave solution for [itex]\Psi[/itex] cannot have a polarization associated with it. The only direction associated with a [itex]\Psi[/itex] wave is the direction of propagation.
 
Vanadium 50 & jtbell---

Thanks for your replies! I shall assume that they apply to all forms of matter waves, single electrons passing through closely paired slits, etc. unless you let me know otherwise. That (i.e. no polarization) would be consistent with the information I've been unable to find.
 

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