New posts in Second Quantization

Why is this sum the delta function?

Are the creation and annihilation operators time-dependent?

Basis transformation of creation and annihilation operators

Why must the Bogoliubov transform preserve anticommutation relations?

How exactly is "normal-ordering an operator" defined?

If all particles are fields, why does first quantization work for some particles?

An exactly solvable model of 2D Majorana zero modes

Meaning of Fock Space

Quantizing a complex Klein-Gordon Field: Why are there two types of excitations?

QM Continuity Equation: Many-Body Version for Density Operator?