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For what it's worth, I've always had the same feeling that the spin should have some sort of reason behind it. It seems so unsatisfying to be told more or less that "it just came that way." Is there any deeper sort of explanation at all? I recall a paper in AJP from years ago called "What is spin?" by Ohanian, but I didn't put in the effort to follow it. I remember it is referenced in a footnote in Griffiths, too.

Hey -- I found it--

http://www.physics.mcmaster.ca/phys3mm3/notes/whatisspin.pdf

This might be along the lines of what you are after.

Added after rereading Ohanian's paper -- A quick look through this paper has me convinced that the explanation he gives is exactly what you are seeking. I think the punch line comes across even if you don't bother to follow all the mathematical details.

For what it's worth, I've always had the same feeling that the spin should have some sort of reason behind it. It seems so unsatisfying to be told more or less that "it just came that way." Is there any deeper sort of explanation at all? I recall a paper in AJP from years ago called "What is spin?" by Ohanian, but I didn't put in the effort to follow it. I remember it is referenced in a footnote in Griffiths, too.

Hey -- I found it--

http://www.physics.mcmaster.ca/phys3mm3/notes/whatisspin.pdf

This might be along the lines of what you are after.

For what it's worth, I've always had the same feeling that the spin should have some sort of reason behind it. It seems so unsatisfying to be told more or less that "it just came that way." Is there any deeper sort of explanation at all? I recall a paper in AJP from years ago called "What is spin?" by Ohanian, but I didn't put in the effort to follow it. I remember it is referenced in a footnote in Griffiths, too.

Hey -- I found it--

http://www.physics.mcmaster.ca/phys3mm3/notes/whatisspin.pdf

This might be along the lines of what you are after.

Added after rereading Ohanian's paper -- A quick look through this paper has me convinced that the explanation he gives is exactly what you are seeking. I think the punch line comes across even if you don't bother to follow all the mathematical details.

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source | link

For what it's worth, I've always had the same feeling that the spin should have some sort of reason behind it. It seems so unsatisfying to be told more or less that "it just came that way." Is there any deeper sort of explanation at all? I recall a paper in AJP from years ago called "What is spin?" by Ohanian, but I didn't put in the effort to follow it. I remember it is referenced in a footnote in Griffiths, too.

Hey -- I found it--

http://www.physics.mcmaster.ca/phys3mm3/notes/whatisspin.pdf

This might be along the lines of what you are after.