Are some elementary particles too massive to obey QM?

[rasp]

I understand photons and elections fit into the probalistic rules of QM. Are there any other elementary particles (more massive) that don’t obey the point/wave duality?

 

[ZapperZ]

A composite particle consisting of 810 atoms had been shown to produce interference pattern. If something that humongous shows QM behavior, do you think something significantly smaller than that such as "elementary particles", even more massive ones, would not?

Zz.

 

[Demystifier]

I understand photons and elections fit into the probalistic rules of QM. Are there any other elementary particles (more massive) that don’t obey the point/wave duality?

Large mass by itself is not a reason to neglect QM effects. The QM effects are often negligible for large objects not because they have a large mass, but because they have a large number of degrees of freedom (i.e. consist of many elementary particles). Namely, larger number of degrees of freedom implies faster decoherence, which is why quantum effects become negligible very fast. On the other hand, you ask about massive elementary particles, and "elementary" implies that they do not have a large number of degrees of freedom. Hence the answer to your question is - no.