Dirac field (PS3) Flashcards
1
Q
What is a propagator?
A
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.
2
Q
What are the symmetries of the quantized Dirac field?
A
Parity, time reversal and charge conjugation
3
Q
How is the Feynman propagator different in the Dirac field than inte the Klein-Gordon field?
A
It has a factor (\slashed{p}+m) added
