# TLS - pseudospin or spin of $SU(2)$?


- usually, TLS is thought to be a parametrization/representation by PSEUDOspin

- if pseudospin is actual spin, then the particle with thissuch a spin is a fermion

https://en.wikipedia.org/wiki/Spin-1/2
https://physics.stackexchange.com/questions/150590/spin-operators-commutation
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## fixed-in-space spins
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[spin operators on different sites commuting](https://users.ox.ac.uk/~phys1116/msm3.pdf)⏎
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## http://www.bourbaphy.fr/frohlich.pdf

# Parents

* QSNS - smoking guns - P