Author Archives: growescience

Neutral Klein-Gordon field – Lagrangian and hamiltonian Advertisements

Nonrelativistic field theory for fermions

Nonrelativistic field theory – Fock space to position space

Principle of least action – where does it come from?

I’ve posted a few photos of objects in the night sky that I’ve taken with my home telescope, from my back yard. The photos aren’t Hubble quality, of course, but considering that I live in a moderately light-polluted area, they’re … Continue reading →

Nonrelativistic field theory – number, creation and annihilation operators

Nonrelativistic field theory – Fourier expansion