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Article Dans Une Revue Pacific Journal of Mathematics Année : 2013

Calogero-Moser versus Kazhdan-Lusztig cells

Résumé

In 1979, Kazhdan and Lusztig developed a combinatorial theory associated with Coxeter groups. They defined in particular partitions of the group in left and two-sided cells. In 1983, Lusztig generalized this theory to Hecke algebras of Coxeter groups with unequal parameters. We propose a definition of left cells and two-sided cells for complex reflection groups, based on ramification theory for Calogero-Moser spaces. These spaces have been defined via rational Cherednik algebras by Etingof and Ginzburg. We conjecture that these coincide with Kazhdan-Lusztig cells, for real reflection groups. Counterparts of families of irreducible characters have been studied by Gordon and Martino, and we provide here a version of left cell representations. The Calogero-Moser cells will be studied in details in a forthcoming paper, providing thus several results supporting our conjecture.
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Dates et versions

hal-00655858 , version 1 (02-01-2012)

Identifiants

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Cédric Bonnafé, Raphaël Rouquier. Calogero-Moser versus Kazhdan-Lusztig cells. Pacific Journal of Mathematics, 2013, 261, pp.45-51. ⟨10.2140/pjm.2013.261.45⟩. ⟨hal-00655858⟩
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