Symmetry as a source of hidden coherent structures in quantum physics: General outlook and examples
Tóm tắt
A general algebraic approach incorporating both invariance groups and dynamical symmetry algebras is developed to reveal hidden coherent structures (closed complexes and configurations) in quantum manybody physics models due to symmetries of their Hamiltonians H. Its general ideas are manifested on some recent new examples: (1) G-invariant biphotons and a related SU(2)-invariant treatment of unpolarized light; (2) quasispin clusters in nonlinear models of quantum optics; and (3) construction of composite particles and (para)fields from G-invariant clusters due to internal symmetries.
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