Focktiloja
Focktiloja, or Fock spaces in English, are a concept in quantum mechanics and quantum field theory that describe a Hilbert space capable of representing states with a variable number of indistinguishable particles. The term is named after the Russian physicist Vladimir Fock, and the Finnish plural form Focktiloja reflects the idea of multiple such spaces or sectors.
The standard construction starts from a single-particle Hilbert space H. The Fock space F(H) is the direct
A common basis for F(H) is the occupation-number basis, written as |n1, n2, …>, where ni denotes the
Focktiloja are central to many areas of physics, including quantum optics, condensed matter, and particle physics,