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- Auxiliary_field abstract "In physics, and especially quantum field theory, an auxiliary field is one whose equations of motion admit a single solution. Therefore, the Lagrangian describing such a field contains an algebraic quadratic term and an arbitrary linear term, while it contains no kinetic terms (derivatives of the field):.The equation of motion for is: and the Lagrangian becomes:. Auxiliary fields do not propagate and hence the content of any theory remains unchanged by adding such fields by hand.If we have an initial Lagrangian describing a field then the Lagrangian describing both fields is:.Therefore, auxiliary fields can be employed to cancel quadratic terms in in and linearize the action Examples of auxiliary fields are the complex scalar field F in a chiral superfield, the real scalar field D in a vector superfield, the scalar field B in BRST and the field in the Hubbard-Stratonovich transformation.The quantum mechanical effect of adding an auxiliary field is the same as the classical, since the path integral over such a field is Gaussian. To wit:.".
- Auxiliary_field wikiPageExternalLink 0108200.
- Auxiliary_field wikiPageID "4250298".
- Auxiliary_field wikiPageRevisionID "580575254".
- Auxiliary_field hasPhotoCollection Auxiliary_field.
- Auxiliary_field subject Category:Quantum_field_theory.
- Auxiliary_field comment "In physics, and especially quantum field theory, an auxiliary field is one whose equations of motion admit a single solution. Therefore, the Lagrangian describing such a field contains an algebraic quadratic term and an arbitrary linear term, while it contains no kinetic terms (derivatives of the field):.The equation of motion for is: and the Lagrangian becomes:.".
- Auxiliary_field label "Auxiliary field".
- Auxiliary_field sameAs 보조장.
- Auxiliary_field sameAs m.0bsc1n.
- Auxiliary_field sameAs Q4827307.
- Auxiliary_field sameAs Q4827307.
- Auxiliary_field wasDerivedFrom Auxiliary_field?oldid=580575254.
- Auxiliary_field isPrimaryTopicOf Auxiliary_field.