metastability

This repository contains the code and data to reproduce the results and figures from the study: Daniel Koch, Ulrike Feudel, Aneta Koseska (2025). Criticality governs response dynamics and entrainment of periodically forced ghost cycles. Physical Review E, XX: XXXX–XXXX.

Code from the study "Ghost channels and ghost cycles guiding long transients in dynamical systems"

Tiny Tapeout TTSKY26c (sky130A): on-chip metastability characterizer -- ring-osc async data + 41-tap delay line + dual-sample witness FFs; raw UART stream for tau/W and MTBF extraction

Adaptive basin geometry, metastable topology-memory basins, and perturbation-driven structural memory dynamics in SRFM Quantum systems.

Gray-pointer asynchronous FIFO with two-flop synchronisers, verified against unrelated clocks and a behavioural metastability model that the binary-pointer version fails.

SRFM Quantum Phase15: Adaptive Structural Survival Metrics and Metastable Basin Dynamics

SRFM Quantum Phase13: Adaptive Transport Phase Memory and Persistent Topology-Only Structural Memory

Hardware-constrained validation of SRFM metastable structural diagnostics on IBM Quantum systems.

ChromaWalker

Clock-domain-crossing verification: a dual-clock asynchronous FIFO with Gray pointers and 2-flop synchronizers, checked across two independent clocks with cocotb. Verified on Icarus Verilog.

NFI integrating mirror layer — cross-domain γ-scaling coherence diagnostics: bootstrap CI, Granger causality, anomaly isolation, phase portraits, reflexive modulation. Single file. Four subsystems. Seven mechanisms.