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Poisson-Hopf limit of quantum algebras

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arxiv 0903.2178 v1 pith:AILKCFDZ submitted 2009-03-12 math.QA math-phmath.MP

classification math.QAmath-phmath.MP
keywords limitalgebraalgebraspoisson-hopfquantumanalogueanaloguesapplications
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The Poisson-Hopf analogue of an arbitrary quantum algebra U_z(g) is constructed by introducing a one-parameter family of quantizations U_{z,h}(g) depending explicitly on h and by taking the appropriate h -> 0 limit. The q-Poisson analogues of the su(2) algebra are discussed and the novel su_q^P (3) case is introduced. The q-Serre relations are also extended to the Poisson limit. This approach opens the perspective for possible applications of higher rank q-deformed Hopf algebras in semiclassical contexts.

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