What is the QFT state with two distinguishable fermions present?
1330
Fermions, different species and (anti-)commutation rules
34350
matter wave and wave function
21917
Mathematical Prerequisites for QFT
75803
Why does the space of pure qudit states have dimension $2(D-1)$, rather than $D^2-2$?
155176
Tensor product vs. Cartesian Product for composite quantum systems
33669
In what sense is a scalar field observable in QFT?
125215
Deriving Schrodinger equation from Klein-Gordon QFT with the definition $\psi(\textbf{x},t)\equiv \langle 0|\phi_0(\textbf{x},t)|\psi\rangle$
83936
Why is the Dirac mass term Hermitian if Grassmann-valued fields anticommute?
159017
Bohr-Sommerfeld quantization condition from the WKB approximation
48584
Wave-particle duality
141949
Tree level QFT and classical fields/particles
111597
Product of 2 dirac delta functions
38216
What would be the Slater's determinant representation for an excited state?
130259
Is the S-Matrix the only quantum field observable?
92358
Can bosons that are composed of several fermions occupy the same state?
103460
Normal but not hermitian nor unitary
148263
Interacting Fields in QFT