Wave equation governing ideal waves
59282
What is the significance of angular frequency $\omega$ with regards to wave functions?
17785
Variational Derivation of Schrodinger Equation
99532
Mathematical precise definition of a PDE being elliptic, parabolic or hyperbolic
62692
Retrieving Maxwell's equations from the minimum action principle
51644
Differential Equations for Physicists
153941
Angular equation for Schrödinger's equation in 3D
116427
$(c^{\mu}\partial_{\mu}-m)\phi(x)=0$ not Lorentz-invariant?
107478
Equation of motion of a free particle
155043
Substitution $\partial_\mu \to D_\mu \equiv \partial_\mu + ieA_\mu$ allows the introduction of electromagnetic interactions
104902
How does Huygens Principle incorporate the unidirectional property of a traveling wave?
153727
Constant term in Lagrangian
49060
What is the difference in the uses of $\omega t$ and $kx$ in wave equation?
80342
Plane waves solutions for Dirac equation in terms of eigenstates of helicity
104657
Wave/particle duality
125215
Deriving Schrodinger equation from Klein-Gordon QFT with the definition $\psi(\textbf{x},t)\equiv \langle 0|\phi_0(\textbf{x},t)|\psi\rangle$
89479
Galilean invariance of a subset of Maxwell equations
129314
The ubiquitous Planewave Ansatz