What is a propagator in quantum field theory?
In quantum mechanics and quantum field theory, the propagator is a function that specifies the probability amplitude for a particle to travel from one place to another in a given period of time, or to travel with a certain energy and momentum.
What did Feynman invent?
Along with his work in theoretical physics, Feynman has been credited with pioneering the field of quantum computing and introducing the concept of nanotechnology. He held the Richard C. Tolman professorship in theoretical physics at the California Institute of Technology.
When should propagator lid be removed?
Re: when to remove propagator lid? Remove them as soon as you see signs of germination. If you don’t, the first ones will go leggy. Don’y worry about the ones you can’t see.
What is the propagator in quantum field theory?
In quantum mechanics and quantum field theory, the propagator is a function that specifies 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. In Feynman diagrams, which serve to calculate the rate of collisions in quantum field theory,…
How is the propagator related to the scattering event?
In Feynman diagrams, which serve to calculate the rate of collisions in quantum field theory, virtual particles contribute their propagator to the rate of the scattering event described by the respective diagram.
Which is the propagator for a massive vector field?
The propagator for a massive vector field can be derived from the Stueckelberg Lagrangian. The general form with gauge parameter λ reads With this general form one obtains the propagator in unitary gauge for λ = 0, the propagator in Feynman or ‘t Hooft gauge for λ = 1 and in Landau or Lorenz gauge for λ = ∞.
Which is the most common propagator in Klein Gordon equation?
We now describe the most common ones. The position space propagators are Green’s functions for the Klein–Gordon equation. This means that they are functions G(x, y) satisfying δ(x − y) is the Dirac delta-function.