 This problem arises implicitly in many nonequilibrium statistical physics scenarios, e.g., when designing processes to implement some desired computations , feedback-control protocols, and Maxwellian demons. However it is known that many such conditional distributions P over a state space X cannot be implemented using  master equation dynamics over just the states in X.
<coherence>  This problem arises implicitly in many nonequilibrium statistical physics scenarios, e.g., when designing processes to implement some desired computations , feedback-control protocols, and Maxwellian demons. However it is known that many such conditional distributions P over a state space X cannot be implemented using  master equation dynamics over just the states in X.
 This problem arises implicitly in many nonequilibrium statistical physics scenarios, e.g., when designing processes to implement some desired computations , feedback-control protocol, or Maxwellian demon). It is known that many such conditional distributions P over a state space X cannot be implemented using master equation dynamics over just the states in X.