##  [Propagator (Green's Function)](/propagator-greens-function) 

  ##  [Propagator (Green's Function)](https://natural.quantumdictionary.io/propagator-greens-function-0) 

  

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**Natural & Formal Sciences Dictionary**

 







 

 

 

 



 

 

 

 

Definition

The kernel or fundamental solution of a linear differential (or integral) operator that maps sources or initial data to fields; in time-dependent contexts it propagates initial conditions or impulses according to causal or boundary prescriptions.