Talk:Exchange symmetry

rigidity of solids

This sentence claims the resistance of ordinary matter is due to degeneracy pressure of fermions (electrons). As I am extremely sure this is the result of coulomb repulsion, I may remove the sentence.

"This resistance gives rise to the “stiffness” or “rigidity” of ordinary atomic matter (as atoms contain electrons which are fermions).

[edit]"

Larryisgood (talk) 17:59, 23 April 2011 (UTC)

"rotation of each particle by 360 degrees" ?

I would have said "the exchange of two identical particles is mathematically equivalent to the rotation of each particle by 180° so a 360° rotation of one of them.

(If each particle rotate by 360°, the wave function remains unchanged, I think.) — Preceding unsigned comment added by 93.8.224.91 (talk) 07:37, 15 June 2011 (UTC)

What to do with this article?

It's rather short, and could be

• expanded, or
• split to elsewhere like identical particles, or
• since it's about symmetry in quantum mechanics I'd (naturally) be inclined to just merge it into that article.

Others may have a different opinion. Raised this at Wikipedia talk:WikiProject Physics#Exchange symmetry. Thoughts? M∧Ŝc²ħεИ_τlk 08:52, 30 June 2013 (UTC)

Probably makes sense to redirect to Identical_particles#Quantum_mechanical_description_of_identical_particles which seems to have a lengthy and thorough discussion of this. (A lot more thorough and detailed and intuitive than this present stub). One thing which could perhaps be added, though, is some gloss and reference to Exchange interaction -- the change in atomic or molecular orbital energy levels when the exchange symmetry requirement is taken into account. The identical particles article currently seems to be missing a nod to this. Jheald (talk) 15:38, 30 June 2013 (UTC)

I'll wait for other opinions but it would be good to fix and make use of the material rather than just redirecting. Thanks, M∧Ŝc²ħεИ_τlk 09:19, 1 July 2013 (UTC)

I'm not sure that there's much here that would be worth adding to Identical particles. That article already treats the concept more thoroughly and more accessibly than what is here. Jheald (talk) 18:45, 1 July 2013 (UTC)

No other responses. Let's do it both ways - copy material from here into symmetry in quantum mechanics and redirect this page (exchange symmetry) to Identical particles#Quantum mechanical description of identical particles. I'll provide the copying attribution on the talk pages. M∧Ŝc²ħεИ_τlk 14:13, 11 July 2013 (UTC)