1. Klein-Gordon Equation The Klein-Gordon equation is a relativistic wave equation, related to the Schrödinger equation. It is second order in space and time and manifestly Lorentz covariant. It is a quantized version of the relativistic energy–momentum relation. Its solutions include a quantum scalar or pseudoscalar field, a field whose quanta are spinless particles. The […]

# Category: Methods of Mathematical Physics

## Methods of Mathematical Physics – Green’s Function for Helmholtz Equation

The first time I learn Green’s function is about 5 years ago, but never have the chance to use it to solve a practical problems. I always feel my foundation in this part is superficial every time I encounter this widely used function. Fortunately, our professor of Methods of Mathematical Physics provided profound instruction on […]