I would argue that the neutrino is relatively large compared to the quanta typical of these kinds of tests, but in the abstract they suggested a basketball!
I think most test of bell inequality are made using photons. I'm not sure about this inequality. Neutrons are much bigger than photons [1], but somewhat similar experiments of interference have been made with helium atoms and even small molecules (with 10 atoms or so).
So if they say it's big in the quantum word, I expect at least a molecule. And the article saying macroscopic everywhere really sugest basketballs.
From the initial description, I was optimistic and I was expecting small dots of "dust", or a tiny thin membrane. There are some experimental results with extremly small object, but I guess they have a lot of thechnical problems and are difficult to use them in complex measurements.
I agree. (I missed the "ino".) It's also important that (as far as we know) the neutrino is an elementary particle, but the neutron is composed by three real quarks and a lot of virtual quarks and gluons, it's a huge mess of smaller particles together.
So if they say it's big in the quantum word, I expect at least a molecule. And the article saying macroscopic everywhere really sugest basketballs.
From the initial description, I was optimistic and I was expecting small dots of "dust", or a tiny thin membrane. There are some experimental results with extremly small object, but I guess they have a lot of thechnical problems and are difficult to use them in complex measurements.
[1] Ignoring a lot of technical details.