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Vacuum expectation value, the Glossary

Index Vacuum expectation value

In quantum field theory the vacuum expectation value (also called condensate or simply VEV) of an operator is its average or expectation value in the vacuum.[1]

Table of Contents

  1. 27 relations: Casimir effect, Charge (physics), Correlation function (quantum field theory), Dalton (unit), Dark energy, Electronvolt, Expectation value (quantum mechanics), Fermi's interaction, Fermion, Fermionic condensate, Gluon condensate, Higgs boson, Higgs mechanism, Lorentz scalar, Operator (physics), QCD matter, Quantum chromodynamics, Quantum field theory, Quantum vacuum state, Quark, Spontaneous symmetry breaking, Standard Model, String theory, Tensor field, Universe, Vacuum energy, Wightman axioms.

  2. Standard Model

Casimir effect

In quantum field theory, the Casimir effect (or Casimir force) is a physical force acting on the macroscopic boundaries of a confined space which arises from the quantum fluctuations of a field. Vacuum expectation value and Casimir effect are quantum field theory.

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Charge (physics)

In physics, a charge is any of many different quantities, such as the electric charge in electromagnetism or the color charge in quantum chromodynamics.

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Correlation function (quantum field theory)

In quantum field theory, correlation functions, often referred to as correlators or Green's functions, are vacuum expectation values of time-ordered products of field operators. Vacuum expectation value and correlation function (quantum field theory) are quantum field theory.

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Dalton (unit)

The dalton or unified atomic mass unit (symbols: Da or u) is a non-SI unit of mass defined as of the mass of an unbound neutral atom of carbon-12 in its nuclear and electronic ground state and at rest.

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Dark energy

In physical cosmology and astronomy, dark energy is an unknown form of energy that affects the universe on the largest scales.

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Electronvolt

In physics, an electronvolt (symbol eV), also written electron-volt and electron volt, is the measure of an amount of kinetic energy gained by a single electron accelerating through an electric potential difference of one volt in vacuum.

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Expectation value (quantum mechanics)

In quantum mechanics, the expectation value is the probabilistic expected value of the result (measurement) of an experiment.

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Fermi's interaction

In particle physics, Fermi's interaction (also the Fermi theory of beta decay or the Fermi four-fermion interaction) is an explanation of the beta decay, proposed by Enrico Fermi in 1933.

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Fermion

In particle physics, a fermion is a particle that follows Fermi–Dirac statistics. Vacuum expectation value and fermion are quantum field theory.

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Fermionic condensate

A fermionic condensate (or Fermi–Dirac condensate) is a superfluid phase formed by fermionic particles at low temperatures. Vacuum expectation value and fermionic condensate are quantum field theory.

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Gluon condensate

In quantum chromodynamics (QCD), the gluon condensate is a non-perturbative property of the QCD vacuum which could be partly responsible for giving masses to light mesons. Vacuum expectation value and gluon condensate are quantum physics stubs.

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Higgs boson

The Higgs boson, sometimes called the Higgs particle, is an elementary particle in the Standard Model of particle physics produced by the quantum excitation of the Higgs field, one of the fields in particle physics theory. Vacuum expectation value and Higgs boson are quantum field theory and Standard Model.

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Higgs mechanism

In the Standard Model of particle physics, the Higgs mechanism is essential to explain the generation mechanism of the property "mass" for gauge bosons. Vacuum expectation value and Higgs mechanism are quantum field theory and Standard Model.

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Lorentz scalar

In a relativistic theory of physics, a Lorentz scalar is a scalar expression whose value is invariant under any Lorentz transformation.

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Operator (physics)

An operator is a function over a space of physical states onto another space of states.

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QCD matter

Quark matter or QCD matter (quantum chromodynamic) refers to any of a number of hypothetical phases of matter whose degrees of freedom include quarks and gluons, of which the prominent example is quark-gluon plasma.

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Quantum chromodynamics

In theoretical physics, quantum chromodynamics (QCD) is the study of the strong interaction between quarks mediated by gluons. Vacuum expectation value and quantum chromodynamics are quantum field theory and Standard Model.

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Quantum field theory

In theoretical physics, quantum field theory (QFT) is a theoretical framework that combines classical field theory, special relativity, and quantum mechanics.

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Quantum vacuum state

In quantum field theory, the quantum vacuum state (also called the quantum vacuum or vacuum state) is the quantum state with the lowest possible energy. Vacuum expectation value and quantum vacuum state are quantum field theory.

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Quark

A quark is a type of elementary particle and a fundamental constituent of matter.

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Spontaneous symmetry breaking

Spontaneous symmetry breaking is a spontaneous process of symmetry breaking, by which a physical system in a symmetric state spontaneously ends up in an asymmetric state. Vacuum expectation value and spontaneous symmetry breaking are quantum field theory and Standard Model.

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Standard Model

The Standard Model of particle physics is the theory describing three of the four known fundamental forces (electromagnetic, weak and strong interactions – excluding gravity) in the universe and classifying all known elementary particles.

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String theory

In physics, string theory is a theoretical framework in which the point-like particles of particle physics are replaced by one-dimensional objects called strings. Vacuum expectation value and string theory are quantum field theory.

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Tensor field

In mathematics and physics, a tensor field assigns a tensor to each point of a mathematical space (typically a Euclidean space or manifold).

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Universe

The universe is all of space and time and their contents.

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Vacuum energy

Vacuum energy is an underlying background energy that exists in space throughout the entire universe. Vacuum expectation value and Vacuum energy are quantum field theory.

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Wightman axioms

In mathematical physics, the Wightman axioms (also called Gårding–Wightman axioms), named after Arthur Wightman, are an attempt at a mathematically rigorous formulation of quantum field theory.

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See also

Standard Model

References

[1] https://en.wikipedia.org/wiki/Vacuum_expectation_value

Also known as Condensate (quantum field theory), VEV, Vacuum condensate.