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**Fock space**— The Fock space is an algebraic system (Hilbert space) used in quantum mechanics to describe quantum states with a variable or unknown number of particles. It is named for V. A. Fock.Technically, the Fock space is the Hilbert space made from the… … Wikipedia**Fock state**— A Fock state (also known as a number state), in quantum mechanics, is any element of a Fock space with a well defined number of particles (or quanta). These states are named after the Soviet physicist, V. A. Fock. Contents 1 Definition 2 Energy… … Wikipedia**Fock, Vladimir Aleksandrovich**— ▪ Russian mathematical physicist born Dec. 22 [Dec. 10, Old Style], 1898, St. Petersburg, Russia died Dec. 27, 1974, Leningrad, Russia, U.S.S.R. [now St. Petersburg, Russia] Russian mathematical physicist who made seminal contributions to… … Universalium**Fock state**— noun Any state of the Fock space with a well defined number of particles in each state … Wiktionary**Vladimir Fock**— Vladimir Aleksandrovich Fock (or Fok, ru. Владимир Александрович Фoк) (December 22 1898 ndash;December 27 1974) was a Soviet physicist, who did foundational work on quantum mechanics. He was born in St. Petersburg, Russia. In 1922 he graduated… … Wikipedia**Hilbert space**— For the Hilbert space filling curve, see Hilbert curve. Hilbert spaces can be used to study the harmonics of vibrating strings. The mathematical concept of a Hilbert space, named after David Hilbert, generalizes the notion of Euclidean space. It… … Wikipedia**Hartree-Fock**— In computational physics and computational chemistry, the Hartree Fock (HF) method is an approximate method for the determination of the ground state wavefunction and ground state energy of a quantum many body system.The Hartree Fock method… … Wikipedia**BRST quantization**— In theoretical physics, BRST quantization (where the BRST refers to Becchi, Rouet, Stora and Tyutin) is a relatively rigorous mathematical approach to quantizing a field theory with a gauge symmetry. Quantization rules in earlier QFT frameworks… … Wikipedia**Quantum field theory**— In quantum field theory (QFT) the forces between particles are mediated by other particles. For instance, the electromagnetic force between two electrons is caused by an exchange of photons. But quantum field theory applies to all fundamental… … Wikipedia**Coherent states in mathematical physics**— Coherent states have been introduced in a physical context, first as quasi classical states in quantum mechanics, then as the backbone of quantum optics and they are described in that spirit in the article Coherent states (see also [1]). However … Wikipedia