**Second quantization** (Field Quantization) is a formalism used to describe and analyze quantum many-body systems. It is also known as canonical quantization in quantum field theory, in which the fields (typically as the wave functions of matter) are thought of as field operators, in a manner similar to how the physical quantities (position, momentum, etc.) are thought of as operators in first quantization. The key ideas of this method were introduced in 1927 by Dirac, and were developed, most notably, by Fock and Jordan later.

In this approach, the quantum many-body states are represented in the Fock state basis, which are constructed by filling up each single-particle state with a certain number of identical particles. The **second quantization** formalism introduces the creation and annihilation operators to construct and handle the Fock states, providing useful tools to the study of the quantum many-body theory. Wikipedia, Second Quantization

See Also

**classical field theory**
**depolar field**
**Electromagnetic Field**
**Ether - Bloomfield-Moore**
**field**
**Field Physics**
**Fieldless Armature**
**H Field**
**luminous field**
**magnetic field**
**Magnetic Fields Ball Lightning and Campanology**
**molecular field**
**neutral field**
**One More Step Toward Building The Cube-Sphere Wave-Field**
**Plants as Detectors of the Biofield**
**polar field**
**Quantization - Physics**
**quantum field theory**
**Rotating Magnetic Field**
**Stubblefield Coil**
**sympathetic field**
**Unified Field Theory**
**vector field**
**Wave Field**
**Wave Fields - Summarize and Simplify**
**We Now Build the Nine Equators of Cube-Sphere Wave-Fields**