Non-Lagrangian gauge field models are physically excluded

While non-action-generated, but identically conserved, abelian/YM gauge vectors exist, they are unsuitable for building alternate field equations, because they have no stress-tensor, hence do not permit Poincare generators and, most physically, cannot consistently couple to gravity. Separately, thei...

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Main Author: S. Deser
Format: Article
Language:English
Published: Elsevier 2019-03-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269319300693
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author S. Deser
author_facet S. Deser
author_sort S. Deser
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description While non-action-generated, but identically conserved, abelian/YM gauge vectors exist, they are unsuitable for building alternate field equations, because they have no stress-tensor, hence do not permit Poincare generators and, most physically, cannot consistently couple to gravity. Separately, their geometric analogues, covariantly conserved non-Lagrangian symmetric tensors, probably do not even exist, but their weak field, abelian, counterparts do, and share the vector fields' absence of generators.
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spelling doaj.art-3d13159e932840daacd789f6f10e42cd2022-12-22T01:29:44ZengElsevierPhysics Letters B0370-26932019-03-01790408409Non-Lagrangian gauge field models are physically excludedS. Deser0Walter Burke Institute for Theoretical Physics, California Institute of Technology, Pasadena, CA 91125, United States of America; Physics Department, Brandeis University, Waltham, MA 02454, United States of America; Correspondence to: Walter Burke Institute for Theoretical Physics, California Institute of Technology, Pasadena, CA 91125, United States of America.While non-action-generated, but identically conserved, abelian/YM gauge vectors exist, they are unsuitable for building alternate field equations, because they have no stress-tensor, hence do not permit Poincare generators and, most physically, cannot consistently couple to gravity. Separately, their geometric analogues, covariantly conserved non-Lagrangian symmetric tensors, probably do not even exist, but their weak field, abelian, counterparts do, and share the vector fields' absence of generators.http://www.sciencedirect.com/science/article/pii/S0370269319300693
spellingShingle S. Deser
Non-Lagrangian gauge field models are physically excluded
Physics Letters B
title Non-Lagrangian gauge field models are physically excluded
title_full Non-Lagrangian gauge field models are physically excluded
title_fullStr Non-Lagrangian gauge field models are physically excluded
title_full_unstemmed Non-Lagrangian gauge field models are physically excluded
title_short Non-Lagrangian gauge field models are physically excluded
title_sort non lagrangian gauge field models are physically excluded
url http://www.sciencedirect.com/science/article/pii/S0370269319300693
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