Atom Composition: Boson or Fermion?

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Discussion Overview

The discussion centers on the composition of an atom, specifically whether it can be classified as a boson or a fermion based on its constituent particles' spins. The scope includes theoretical considerations of particle spin and classification within quantum mechanics.

Discussion Character

  • Debate/contested, Conceptual clarification, Technical explanation

Main Points Raised

  • One participant proposes that an atom consists of an electron (spin 1/2) and a positively charged spin 2 particle at the nucleus, questioning whether this configuration results in a boson or fermion classification.
  • Another participant references deuterium, suggesting that its nucleus can have spin 1 or 0, leading to the conclusion that the atom, having 1/2 integer spin, is a fermion.
  • A different viewpoint suggests that total spin values can range from $s_{max} = 5/2$ to $s_{min} = 3/2$, both of which are half-integer spins, reinforcing the classification as a fermion.
  • One participant asserts that there is no ambiguity in the classification of real particles regarding bosons and fermions based on their spin.
  • There is a technical note about the formatting of LaTeX in the discussion, indicating a preference for specific tags for mathematical expressions.

Areas of Agreement / Disagreement

Participants express differing views on the classification of the atom as a boson or fermion, with no consensus reached on the implications of spin values and configurations.

Contextual Notes

There are unresolved aspects regarding the definitions of particle spins and their implications for classification, as well as the specific conditions under which these classifications apply.

ee7klt
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an atom consists of an electron (spin 1/2) and a positively charged spin 2 particle at the nucleus (in place of the proton). is this 'atom' a boson or a fermion?
 
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Deuterium has essentially the property you are asking about. The nucleus has spin 1 or 0 depending on the way the neutron and proton spins add. Since the atom has 1/2 integer spin it is a fermiom.
 
well you could have $s_{max} = 5/2$ and $s_{min} = 3/2$ with no more in between. both of which are half integer spins - so a fermion. either way you cut it, if anyone value of total spin is an integer (half-integer), the rest have to be integers (half-integer) so no ambiguity between bosons and fermions...?
 
Nope,not for real particles there isn't any ambiguity.

This Latex doesn't work with $ tags,but with [ tex ] and [ /tex ] tags (without the spaces,of course) and for formulas inside text [ itex ] and [ /itex ] ...

Daniel.
 

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