Research Interests
$\bullet$ Operator algebras associated with groups.
$\bullet$ Geometric and analytic group theory.
$\bullet$ Expander graphs.
Recent Publications of Prof. Dr. Tim de Laat
$\bullet $ Benjamin Anderson-Sackaney, Tim de Laat, Ebrahim Samei, and Matthew Wiersma. Entropies and Poisson boundaries of random walks on groups with rapid decay. arXiv e-prints, October 2024. arXiv:2410.19689.
$\bullet $ Antje Dabeler, Emilie Mai Elkiær, Maria Gerasimova, and Tim de Laat. Unitary $L^p$$^+$-representations of almost automorphism groups. Comptes Rendus. Mathématique, 362(G3):245–249, May 2024. doi:10.5802/crmath.549.
$\bullet $ Tim de Laat, Federico Vigolo, and Jeroen Winkel. Dynamical propagation and Roe algebras of warped spaces. arXiv e-prints, August 2023. arXiv:2308.07006.
$\bullet $ Tim de Laat and Mikael de la Salle. Actions of higher rank groups on uniformly convex Banach spaces. arXiv e-prints, March 2023. arXiv:2303.01405.
$\bullet $ Tim de Laat and Safoura Zadeh. Weak$_*$-continuity of invariant means on spaces of matrix coefficients. J. Math. Anal. Appl., 506(2):125669, February 2022. doi:10.1016/j.jmaa.2021.125669.
$\bullet $ Goulnara Arzhantseva, Dawid Kielak, Tim de Laat, and Damian Sawicki. Spectral gap and origami expanders. arXiv e-prints, December 2021. arXiv:2112.11864.
$\bullet $ Tim de Laat and Timo Siebenand. Exotic group $C^*$-algebras of simple Lie groups with real rank one. Ann. Inst. Fourier, 71(5):2117–2136, December 2021. doi:10.5802/aif.3441.
$\bullet $ Tim de Laat and Mikael de la Salle. Banach space actions and L2-spectral gap. Anal. PDE, 14(1):45–76, February 2021. doi:10.2140/apde.2021.14.45.
$\bullet $ Dennis Heinig, Tim de Laat, and Timo Siebenand. Group $C^*$-algebras of locally compact groups acting on trees. arXiv e-prints, November 2020. arXiv:2011.11265.
$\bullet $ Tim de Laat and Federico Vigolo. Superexpanders from group actions on compact manifolds. Geometriae Dedicata, 200(1):287–302, June 2019. doi:10.1007/s10711-018-0371-0.