One of the key elements of any quantum mechanical system is the
spectrum of the Hamiltonian. But what about in quantum field
theory? It seems as if nobody ever discusses the spectrum of a
system at all -- or have I missed something? Just what role does
the spectrum of any given potential play in field theory? To put it
another way: does knowledge of a spectrum in QM help to understand
the analogous problem in QFT?
What are the basic elements of a valid contract? What are the
elements of an offer? How might an offer terminate? What are the
elements of an acceptance? What is the Mailbox Rule? The Mirror
Image Rule?
The following modeling activities are the basic types of
analytical modeling, EXCEPT:
What-if Analysis
Sensitivity Analysis
Goal-seeking Analysis
PESTLE Analysis