how to visualise the particles of spin 1/2,3/2-----

[gccbhu]

according to the definition of spin ,spin 1/2 particles will be symmetrical if we rotate them 2*360 DEG.WHAT will be the structure of such particles

[sanctus]

What do you mean by structure? There are many scientists that believe that elemantary particles are pointlike (until the contrary is proved), as reality can be described in this way. An electron has spin 1/2 and is an elemantary particle, what does then structure mean?

And adding to that I think (what I read in the book Group theory and QM by tinkham) the fact that you have to turn the particle twice to have again the same spin isn't a problem from the physical viewpoint, because if after one turn you have a minus sign in front of your wavefunction the probabvilty density stays the same as it is the module squared....

[maddog]

Originally Posted by gccbhu

according to the definition of spin ,spin 1/2 particles will be symmetrical if we rotate them 2*360 DEG.WHAT will be the structure of such particles

I was aware the only leptons (electron and such) were the only one with this feature. I have never
heard spoke a protons or neutrons (also spin 1/2 fermions) having this property.

Maddog