query: Reality of the action in QFT
positive_passages.docid: 157321
positive_passages.text: Why does the action have to be hermitian?
negative_passages.docid: 5810
negative_passages.text: What does it mean that particles are the quanta of fields?
negative_passages.docid: 76648
negative_passages.text: do quantum fields exist in superposition?
negative_passages.docid: 26125
negative_passages.text: Does the canonical commutation relation fix the form of the momentum operator?
negative_passages.docid: 141949
negative_passages.text: Tree level QFT and classical fields/particles
negative_passages.docid: 125215
negative_passages.text: Deriving Schrodinger equation from Klein-Gordon QFT with the definition $\psi(\textbf{x},t)\equiv \langle 0|\phi_0(\textbf{x},t)|\psi\rangle$
negative_passages.docid: 157191
negative_passages.text: Conjugate Variables, Noether's Theorem and QM
negative_passages.docid: 151173
negative_passages.text: Is the quantum action principle of Schwinger a variational principle?
negative_passages.docid: 100985
negative_passages.text: Effect of linear terms on a QFT
negative_passages.docid: 60289
negative_passages.text: How does QFT interpret the Negative probability problem of the real scalar fields' Klein-Gordon equation?
negative_passages.docid: 130752
negative_passages.text: Can we treat $\psi^{c}$ as a field independent from $\psi$?
negative_passages.docid: 33669
negative_passages.text: In what sense is a scalar field observable in QFT?
negative_passages.docid: 124863
negative_passages.text: Performing Wick Rotation to get Euclidean action of a scalar field $\Psi$
negative_passages.docid: 82135
negative_passages.text: Lagrangian to Hamiltonian in Quantum Field Theory
negative_passages.docid: 67641
negative_passages.text: Why should field operators satisfy the classical equations of motion?
negative_passages.docid: 117387
negative_passages.text: Can we safely assume $\Psi(x,t) = \psi(x)e^{-i\omega t}$ always in QM?
negative_passages.docid: 26817
negative_passages.text: Quantum Field Theory from a mathematical point of view