Time scaling Ab initio 2 Ab initio calculations 2 Ammonia 2 Ammonia clusters 2 Ammonia molecules 2 Bell states 2 Charge separation (CS) 2 Correlation lengths 2 Decoherence 2 Electron transfer process (ETP) 2 Exact solutions 2 Excited states 2 Flow interactions 2 Free radical reactions 2 Ground state 2 Hamiltonian 2 Hydrogen 2 Initial states 2 Interaction sites 2 Ionic strength 2 Ising chains 2 Local interactions 2 Non-markovian effects 2 Numerica l results 2 Phenols 2 Pump probes 2 Small clusters 2 Spin chains 2 Spin dynamics 2