The quantum duality principle
Annales de l'Institut Fourier, Volume 52 (2002) no. 3, p. 809-834

The “quantum duality principle” states that the quantization of a Lie bialgebra – via a quantum universal enveloping algebra (in short, QUEA) – also provides a quantization of the dual Lie bialgebra (through its associated formal Poisson group) – via a quantum formal series Hopf algebra (QFSHA) — and, conversely, a QFSHA associated to a Lie bialgebra (via its associated formal Poisson group) yields a QUEA for the dual Lie bialgebra as well; more in detail, there exist functors 𝒬𝒰𝒜𝒬𝒮𝒜 and 𝒬𝒮𝒜𝒬𝒰𝒜, inverse to each other, such that in both cases the Lie bialgebra associated to the target object is the dual of that of the source object. Such a result was claimed true by Drinfeld, but seems to be unproved in the literature: I give here a thorough detailed proof of it.

Le “principe de dualité quantique” affirme que la quantification d’une bigèbre de Lie - moyennant une algèbre enveloppante universelle quantifiée (en abrégé, une QUEA) - donne aussi une quantification de la bigèbre de Lie duale (via son groupe de Poisson formel associé) - moyennant une algèbre de Hopf de séries formelles (QFSHA) - et, vice versa, une QFSHA associée à une bigèbre de Lie (via son groupe de Poisson formel associé) donne également une QUEA pour la bigèbre de Lie duale. Plus précisément, il existe deux foncteurs 𝒬𝒰𝒜𝒬𝒮𝒜 et 𝒬𝒮𝒜𝒬𝒰𝒜, inverses l’un de l’autre, tels que dans les deux cas la bigèbre de Lie associée à l’objet cible est la duale de celle de l’objet source. Une version plus faible de ce type de résultats avait été annoncée par Drinfeld, mais aucune preuve ne figure dans la littérature : j’en donne ici une preuve complète et détaillée.

DOI : https://doi.org/10.5802/aif.1902
Classification:  17B37,  20G42,  81R50,  16W30
Keywords: quantum groups, topological Hopf algebras
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     author = {Gavarini, Fabio},
     title = {The quantum duality principle},
     journal = {Annales de l'Institut Fourier},
     publisher = {Association des Annales de l'institut Fourier},
     volume = {52},
     number = {3},
     year = {2002},
     pages = {809-834},
     doi = {10.5802/aif.1902},
     zbl = {1054.17011},
     mrnumber = {1907388},
     language = {en},
     url = {http://www.numdam.org/item/AIF_2002__52_3_809_0}
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Gavarini, Fabio. The quantum duality principle. Annales de l'Institut Fourier, Volume 52 (2002) no. 3, pp. 809-834. doi : 10.5802/aif.1902. http://www.numdam.org/item/AIF_2002__52_3_809_0/

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