How are the spatial and temporal patterns of information scrambling in locally interacting quantum many-body systems imprinted on the eigenstates of the system's time-evolution operator? We address this question by identifying statistical correlations among sets of minimally four eigenstates that provide a unified framework for various measures of information scrambling. These include operator mutual information and operator entanglement entropy of the time-evolution operator, as well as more conventional diagnostics such as two-point dynamical correlations and out-of-time-ordered correlators. We demonstrate this framework by obtaining numerical results for Floquet Haar-random circuits and by deriving exact results for eigenstate correlations in a minimal model of quantum chaos-Floquet dual-unitary circuits. These results reveal not only the butterfly effect and the information lightcone, but also finer structures of scrambling within the lightcone. Our work thus shows how the eigenstates of a chaotic system can encode the full spatiotemporal anatomy of quantum chaos, going beyond the descriptions offered by random matrix theory and the eigenstate thermalization hypothesis.

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• Eigenstate thermalization
• Information scrambling
• Quantum chaos
• Quantum circuits
• Quantum correlations in quantum information
• Quantum statistical mechanics
• Floquet systems
• Quantum spin models
• Diagrammatic methods
• Duality
• Exact solutions for many-body systems