From wavefunction to quantum fields?
110122
Difference between field and wavefunction
17120
Why use Fourier expansion in Quantum Field Theory?
69481
Classical limit of the path integral formulation of quantum mechanics
15275
How do you go from quantum electrodynamics to Maxwell's equations?
21917
Mathematical Prerequisites for QFT
35694
Can virtual particles be thought of as off-shell Fourier components of a field?
89528
Formalizing Quantum Field Theory
38359
How can one derive Schrödinger equation?
114247
Allowed Wave Functions of System
59657
On the nature of the collapse of the wave function
65535
How is the Schroedinger equation a wave equation?
49617
How does a Wavefunction collapse?
92550
What is a quantum field?
49348
S. Weinberg, “The Quantum theory of fields: Foundations” (1995), Eq. (9.2.15)
110888
Quantum states as rays as opposed to vectors
45559
Why we use $L_2$ Space In QM?
141949
Tree level QFT and classical fields/particles