Does the Pauli Exclusion Principle Apply to All Types of Particles and Atoms?

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Discussion Overview

The discussion centers on the applicability of the Pauli Exclusion Principle to various types of particles and atoms, exploring its original formulation and implications for fermions and bosons. Participants examine whether the principle is limited to atomic electrons or extends to other particles.

Discussion Character

  • Debate/contested

Main Points Raised

  • One participant questions whether the Pauli Exclusion Principle applies only to atomic electrons, suggesting that its original formulation may not limit its scope.
  • Another participant asserts that the principle applies specifically to electrons in atomic electron shells, referencing its historical context and original formulation by W. Pauli.
  • A participant notes that fermions, which include particles like quarks and neutrinos, obey Fermi-Dirac statistics, indicating that identical fermions cannot occupy the same quantum state.
  • There is a query about whether there are other types of particles, aside from bosons, for which the principle does not apply.
  • A later reply introduces the concept of ghost fields as fermionic entities, suggesting they are described by a specific mathematical framework and possess integer spin.

Areas of Agreement / Disagreement

Participants express differing views on the scope of the Pauli Exclusion Principle, with no consensus reached regarding its applicability to all particles or its limitations to atomic electrons.

Contextual Notes

The discussion highlights the complexity of defining the applicability of the Pauli Exclusion Principle, with references to specific particle types and statistical behaviors that may not be universally agreed upon.

Kahsi
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Does it include all types of particles? All atoms?

Thank you.
 
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Nope.It applied only to electrons in atomic electron shells (the original 1925 formulation due to W.Pauli,which earned him a Nobel Prize).

Daniel.
 
It's not clear to me whether the Pauli Exclusion Principle (even though it might have been originally formulated as such) is only intended to apply to atomic electrons. I don't think that's important though.

More importantly - fermions, any particles (quarks, neutrinos, etc) have spins in multiples of 1/2, do obey Fermi-Dirac statistics, which says that identical fermions cannot be in the same quantum state.

Bosons, of integer spin, do not.
 
Is there any other then bosons that it doesn't work for?
 
Yes,ghost fields are fermionic (described by elements of a [itex]\mathbb{Z}_{2}[/itex] graded Grassmann algebra) integer spin fields...

Daniel.
 

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