# TLS - pseudospin or spin of $SU(2)$?
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- usually, TLS is thought to be a parametrization/representation by PSEUDOspin
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- if pseudospin is actual spin, then the particle with this spin is a fermion
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## http://www.bourbaphy.fr/frohlich.pdf
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# Parents
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* QSNS - smoking guns - P⏎