81XX 


Quantum theory 

81Rxx 

Groups and algebras in quantum theory 


81R05 
Finitedimensional groups and algebras motivated by physics and their representations [See also 20C35, 22E70] 


81R10 
Infinitedimensional groups and algebras motivated by physics, including Virasoro, KacMoody, $W$algebras and other current algebras and their representations [See also 17B65, 17B67, 22E65, 22E67, 22E70] 


81R12 
Relations with integrable systems [See also 17Bxx, 37J35] 


81R15 
Operator algebra methods [See also 46Lxx, 81T05] 


81R20 
Covariant wave equations 


81R25 
Spinor and twistor methods [See also 32L25] 


81R30 
Coherent states [See also 22E45}; squeezed states \SeeAlso{81V80]} 


81R40 
Symmetry breaking 


81R50 
Quantum groups and related algebraic methods [See also 16T20, 17B37] 


81R60 
Noncommutative geometry 


81R99 
None of the above, but in this section 