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Single Idea 21158

[filed under theme 27. Natural Reality / B. Modern Physics / 4. Standard Model / c. Particle properties ]

Full Idea

Particles with half-integer spin, such as electrons, protons or quarks (all spin ½) have an asymmetry in their wavefunction that makes them antisocial. These particles (Fermions) cannot share a quantum state.

Gist of Idea

Fermions, with spin ½, are antisocial, and cannot share quantum states

Source

New Scientist writers (Why the Universe Exists [2017], 02)

Book Ref

New Scientist writers: 'Why the Universe Exists' [John Murray 2017], p.31


A Reaction

This is said to explain the complexity of matter, with carbon an especially good example.


The 11 ideas with the same theme [features found in various particles]:

Experiments show that fundamental particles of one type are identical [Farmelo]
Eletrons don't literally 'spin', because they are point-like [Martin,BR]
The properties of a particle are determined by its quantum numbers and its mass [Martin,BR]
Virtual particles surround any charged particle [Martin,BR]
Particle measurements don't seem to reflect their reality [Baggott]
Spin is a built-in ration of angular momentum [New Sci.]
Quarks have red, green or blue colour charge (akin to electric charge) [New Sci.]
Fermions, with spin ½, are antisocial, and cannot share quantum states [New Sci.]
Particles are spread out, with wave-like properties, and higher energy shortens the wavelength [New Sci.]
Spin is akin to rotation, and is easily measured in a magnetic field [New Sci.]
Quarks and leptons have a weak charge, for the weak force [Hesketh]