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New posts in Klein Gordon Equation
Why can you deform the contour in the integral expression for the Klein-Gordon propagator to get the Euclidean propagator?
Apr 25, 2021
Deriving Klein-Gordon from Hamilton's equations for fields using functional derivatives
Apr 25, 2021
Time-independent Klein-Gordon PDE
Apr 25, 2021
Non-Relativistic Limit of Klein-Gordon Probability Density
Apr 25, 2021
Why can the Klein-Gordon field be Fourier expanded in terms of ladder operators?
Apr 25, 2021
$\phi^{4}$ theory
Apr 25, 2021
Quantizing a complex Klein-Gordon Field: Why are there two types of excitations?
Apr 25, 2021
How to derive the theory of quantum mechanics from quantum field theory?
Apr 25, 2021
Contradictory result for scalar-field propagator from Feynman rules and LSZ formula
Apr 25, 2021
Why aren't four-vectors used in the definition of a Klein-Gordon quantum field?
Apr 25, 2021
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