Author(s): Lucila Peralta Gavensky, Nathan Goldman, and Gonzalo Usaj Quantized bulk response functions are hallmark signatures of topological phases, but their manifestation in periodically driven (Floquet) systems is not yet fully established. Here, we show that two-dimensional anomalous Floquet systems exhibit a quantized bulk response encoded in a Chern-Simons axi… [Phys. Rev. Lett. 137, 086601] Published Mon Aug 17, 2026