Spin ↩

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created: 2022-01-06 16:40:38
modified: 2022-01-10 04:13:04

In quantum mechanics, each type of particle has a spin , which is a non-negative integer or half-integer. The Hilbert space for such a particle is , where is the spinor part of the wavefunction, with dimension .1

Electrons for example have a spin , so their spinor part is 2 dimensional (see Spin-½). Particles can be grouped by their spins.

The discovery of the spin was preceded by several experimental confirmations.

  1. Where denotes the tensor product of vector spaces and is the set of square-integrable functions.
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