query: In path integrals, why is phase defined the way it is?
positive_passages.docid: 42778
positive_passages.text: Why is the contribution of a path in Feynmans path integral formalism $\sim e^{(i/\hbar)S[x(t)]}$?
negative_passages.docid: 155316
negative_passages.text: Are two waves out of phase only when the phase difference is $\pi$?
negative_passages.docid: 7555
negative_passages.text: Why do we consider Lagrangian densities in field theory (as opposed to Lagrangians as in point mechanics)?
negative_passages.docid: 82930
negative_passages.text: Why do we say a probability integral transformed variable is uniform on the interval [0, 1]?
negative_passages.docid: 51392
negative_passages.text: What does it mean to Fourier transform a ladder operator (in the input-output formalism)?
negative_passages.docid: 80486
negative_passages.text: Integrable vs. Non-Integrable systems
negative_passages.docid: 57051
negative_passages.text: Why does Quantum Field Theory use Lagrangians rather than Hamiltonians?
negative_passages.docid: 34004
negative_passages.text: Why is time evolution unitary?
negative_passages.docid: 149592
negative_passages.text: Why do we say that irreducible representation of Poincare group represents the one-particle state?
negative_passages.docid: 116871
negative_passages.text: Do photons take all paths or not?
negative_passages.docid: 157673
negative_passages.text: Why does Intermediate Value Theorem only consider end-points?
negative_passages.docid: 8760
negative_passages.text: Is the harmonic oscillator potential unique in having equally spaced discrete energy levels?
negative_passages.docid: 39017
negative_passages.text: The notion of an adiabatic process in thermodynamics -vs- quantum mechanics
negative_passages.docid: 31083
negative_passages.text: Quantum mechanics textbooks that use path integrals
negative_passages.docid: 66919
negative_passages.text: When/why does the principle of least action plus boundary conditions not uniquely specify a path?
negative_passages.docid: 91090
negative_passages.text: Trying to understand the idea behind path independence for line integrals
negative_passages.docid: 139012
negative_passages.text: What is the difference between phase difference and path difference?