Duke Mathematical Journal

Representation zeta functions of compact p-adic analytic groups and arithmetic groups

Nir Avni, Benjamin Klopsch, Uri Onn, and Christopher Voll

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We introduce new methods from p-adic integration into the study of representation zeta functions associated to compact p-adic analytic groups and arithmetic groups. They allow us to establish that the representation zeta functions of generic members of families of p-adic analytic pro-p groups obtained from a global, “perfect” Lie lattice satisfy functional equations. In the case of “semisimple” compact p-adic analytic groups, we exhibit a link between the relevant p-adic integrals and a natural filtration of the locus of irregular elements in the associated semisimple Lie algebra, defined by the centralizer dimension.

Based on this algebro-geometric description, we compute explicit formulas for the representation zeta functions of principal congruence subgroups of the groups SL3(o), where o is a compact discrete valuation ring of characteristic 0, and of the groups SU3(O,o), where O is an unramified quadratic extension of o. These formulas, combined with approximative Clifford theory, allow us to determine the abscissae of convergence of representation zeta functions associated to arithmetic subgroups of algebraic groups of type A2. Assuming a conjecture of Serre on the congruence subgroup problem, we thereby prove a conjecture of Larsen and Lubotzky on lattices in higher-rank semisimple groups for algebraic groups of type A2 defined over number fields.

Article information

Duke Math. J., Volume 162, Number 1 (2013), 111-197.

First available in Project Euclid: 14 January 2013

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Primary: 22E50: Representations of Lie and linear algebraic groups over local fields [See also 20G05] 22E55: Representations of Lie and linear algebraic groups over global fields and adèle rings [See also 20G05] 20F69: Asymptotic properties of groups
Secondary: 22E40: Discrete subgroups of Lie groups [See also 20Hxx, 32Nxx] 11M41: Other Dirichlet series and zeta functions {For local and global ground fields, see 11R42, 11R52, 11S40, 11S45; for algebro-geometric methods, see 14G10; see also 11E45, 11F66, 11F70, 11F72} 20C15: Ordinary representations and characters 20G25: Linear algebraic groups over local fields and their integers


Avni, Nir; Klopsch, Benjamin; Onn, Uri; Voll, Christopher. Representation zeta functions of compact $p$ -adic analytic groups and arithmetic groups. Duke Math. J. 162 (2013), no. 1, 111--197. doi:10.1215/00127094-1959198. https://projecteuclid.org/euclid.dmj/1358172076

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