I On the necessary conditions to form the hydrogen molecule

[DaTario]

Thank you very much, DrClaude. I also apologize to you for not having organized the text of the question as it should have, with the appropriate references in English.

This phenomenon reminds me of another one, which was studied by Serge Haroche (Nobel Prize winner), namely, the suppression of a given electronic transition in an atom whose electron is in an excited state, when it is placed in front of a mirror, at a given distance.

 

[DrClaude]

This phenomenon reminds me of another one, which was studied by Serge Haroche (Nobel Prize winner), namely, the suppression of a given electronic transition in an atom whose electron is in an excited state, when it is placed in front of a mirror, at a given distance.

That is slightly different in that it is due to the electromagnetic field inside the cavity not having a mode corresponding to the energy of the transition in the atom (so it is a property of the field, not the atom). But it all stems from the same physical framework, namely quantum electrodynamics.

 

[DaTario]

Yes, I understand there are differences, but I 'always' found interesting the metaphorical idea that particles are like 1 and fields are like 0,99999...

In a certain sense, although they propagate differently, the wave function of the atom and the EM field have some degree of correspondence, haven't they?

OBS.: Perhaps it is not appropriate here to conduct a discussion that departs from the original.

 

[snorkack]

For an English source including some introduction, see for example:
https://articles.adsabs.harvard.edu//full/1991ApJ...372..161L/0000161.000.html
Note the link to van Dishoek, 1989.

That symmetry suppresses radiation is something I had in bachelor level chemistry... bonds with symmetry around the bond are inactive in IR, and weak when it is near symmetry.