Definitions for "Propagator"
Keywords:  sown, germinating, lid, seed, humid
Small closed case with a transparent lid, used to provide a humid atmosphere under glass, usually with bottom heat, for rooting cuttings, germinating seed, or raising other plants.
the protective box in which cuttings are planted or seed is sown.
someone who propagates plants (as under glass)
In quantum mechanics and quantum field theory, the propagator gives the probability amplitude for a particle to travel from one place to another in a given time, or to travel with a certain energy and momentum. Propagators are used to represent the contribution of virtual particles on the internal lines of Feynman diagrams. They also can be viewed as the inverse of the wave operator appropriate to the particle, and are therefore often called Green's functions.
a computational agent which is imposed on the variables occurring in the corresponding constraint
Keywords:  multiplies, continues, one
One who propagates; one who continues or multiplies.
Keywords:  spreads, someone, news
someone who spreads the news