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- Vacuum_expectation_value abstract "In quantum field theory the vacuum expectation value (also called condensate or simply VEV) of an operator is its average, expected value in the vacuum. The vacuum expectation value of an operator O is usually denoted by . One of the most widely used, but controversial, examples of an observable physical effect that results from the vacuum expectation value of an operator is the Casimir effect.This concept is important for working with correlation functions in quantum field theory. It is also important in spontaneous symmetry breaking. Examples are:The Higgs field has a vacuum expectation value of 246 GeV This nonzero value underlies the Higgs mechanism of the Standard Model.The chiral condensate in Quantum chromodynamics, about a factor of a thousand smaller than the above, gives a large effective mass to quarks, and distinguishes between phases of quark matter. This underlies the bulk of the mass of most hadrons.The gluon condensate in Quantum chromodynamics may also be partly responsible for masses of hadrons.The observed Lorentz invariance of space-time allows only the formation of condensates which are Lorentz scalars and have vanishing charge.[citation needed] Thus fermion condensates must be of the form , where ψ is the fermion field. Similarly a tensor field, Gμν, can only have a scalar expectation value such as .In some vacua of string theory, however, non-scalar condensates are found. If these describe our universe, then Lorentz symmetry violation may be observable.".
- Vacuum_expectation_value wikiPageID "296060".
- Vacuum_expectation_value wikiPageRevisionID "594812655".
- Vacuum_expectation_value hasPhotoCollection Vacuum_expectation_value.
- Vacuum_expectation_value subject Category:Quantum_field_theory.
- Vacuum_expectation_value subject Category:Standard_Model.
- Vacuum_expectation_value comment "In quantum field theory the vacuum expectation value (also called condensate or simply VEV) of an operator is its average, expected value in the vacuum. The vacuum expectation value of an operator O is usually denoted by . One of the most widely used, but controversial, examples of an observable physical effect that results from the vacuum expectation value of an operator is the Casimir effect.This concept is important for working with correlation functions in quantum field theory.".
- Vacuum_expectation_value label "Vacuum expectation value".
- Vacuum_expectation_value label "Valor esperado do vácuo".
- Vacuum_expectation_value label "Valore di aspettazione del vuoto".
- Vacuum_expectation_value label "Конденсат (квантовая теория поля)".
- Vacuum_expectation_value label "真空期待値".
- Vacuum_expectation_value sameAs Valore_di_aspettazione_del_vuoto.
- Vacuum_expectation_value sameAs 真空期待値.
- Vacuum_expectation_value sameAs 진공_기댓값.
- Vacuum_expectation_value sameAs Valor_esperado_do_vácuo.
- Vacuum_expectation_value sameAs m.01r849.
- Vacuum_expectation_value sameAs Q1137397.
- Vacuum_expectation_value sameAs Q1137397.
- Vacuum_expectation_value wasDerivedFrom Vacuum_expectation_value?oldid=594812655.
- Vacuum_expectation_value isPrimaryTopicOf Vacuum_expectation_value.