The top quark in 2025 -- International year of Quantum Science and Technology

Abstract

Since its discovery at the Tevatron in 1995, the top quark has been extensively studied due to its unique properties. We discuss how the remarkable progress in top-quark physics has opened the possibility of using the top quark as a tool to test quantum mechanics at the energy frontier. After reviewing the motivations for exploring beyond quantum mechanics, we present an example: probing post-quantum correlations at the energy frontier with boosted top quarks.

Comments: LaTeX 12 pages. Keynote address at the 18th International Workshop on Top Quark Physics, Seoul, South Korea, 21-26 September 2025, to appear in the proceedings