On the topological interpretation of gravitational anomalies
Identifieur interne : 000578 ( Istex/Corpus ); précédent : 000577; suivant : 000579On the topological interpretation of gravitational anomalies
Auteurs : Denis PerrotSource :
- Journal of Geometry and Physics [ 0393-0440 ] ; 2001.
English descriptors
- KwdEn :
- Algebra, Anomaly, Anomaly formula, Associative algebra, Bott periodicity, Characteristic classes, Chern, Chern character, Cochains, Cohomology, Compact support, Conformal, Conformal anomalies, Conformal transformations, Connes, Cyclic, Cyclic cohomology, Diffeomorphisms, Differential algebra, Differential forms, Differential operator, Elsevier science, Equivariant, Equivariant cohomology, Equivariant cohomology class, Equivariant homology, Exterior algebra, Gauge group, Gauge theories, Ghost vector, Gravitational anomalies, Gravitational anomaly, Gravitational case, Homogeneous cochains, Homotopy quotient, Index theorem, Invariant forms, Inverse limit, Loop group, Matrix, Noncommutative geometry, Nontrivial, Nontrivial loops, Operator algebras, Orientationpreserving diffeomorphisms, Particular case, Perrot, Perrot journal, Pontrjagin classes, Pontrjagin ring, Principal bundle, Riemann surface, Riemann surfaces, Right composition, Structure group, Tensor product, Topological, Topological anomaly, Topological anomaly formula, Topological interpretation, Weil algebra.
- Teeft :
- Algebra, Anomaly, Anomaly formula, Associative algebra, Bott periodicity, Characteristic classes, Chern, Chern character, Cochains, Cohomology, Compact support, Conformal, Conformal anomalies, Conformal transformations, Connes, Cyclic, Cyclic cohomology, Diffeomorphisms, Differential algebra, Differential forms, Differential operator, Elsevier science, Equivariant, Equivariant cohomology, Equivariant cohomology class, Equivariant homology, Exterior algebra, Gauge group, Gauge theories, Ghost vector, Gravitational anomalies, Gravitational anomaly, Gravitational case, Homogeneous cochains, Homotopy quotient, Index theorem, Invariant forms, Inverse limit, Loop group, Matrix, Noncommutative geometry, Nontrivial, Nontrivial loops, Operator algebras, Orientationpreserving diffeomorphisms, Particular case, Perrot, Perrot journal, Pontrjagin classes, Pontrjagin ring, Principal bundle, Riemann surface, Riemann surfaces, Right composition, Structure group, Tensor product, Topological, Topological anomaly, Topological anomaly formula, Topological interpretation, Weil algebra.
Abstract
Abstract: We consider the mixed gravitational Yang–Mills anomaly as the coupling between the K-theory and K-homology of a C∗-algebra crossed product. The index theorem of Connes–Moscovici allows to compute the Chern character of the K-cycle by local formulae involving connections and curvatures. It gives a topological interpretation to the anomaly, in the sense of noncommutative algebras.
Url:
DOI: 10.1016/S0393-0440(01)00002-X
Links to Exploration step
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<ce:keyword><ce:text><ce:italic>K</ce:italic>
-theory</ce:text>
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<ce:keyword><ce:text>Cyclic cohomology</ce:text>
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<name type="personal"><namePart type="given">Denis</namePart>
<namePart type="family">Perrot</namePart>
<affiliation>Centre de Physique Théorique, CNRS-Luminy, Case 907, F-13288 Marseille Cedex 9, France</affiliation>
<affiliation>E-mail: perrot@cpt.univ-mrs.fr</affiliation>
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<abstract lang="en">Abstract: We consider the mixed gravitational Yang–Mills anomaly as the coupling between the K-theory and K-homology of a C∗-algebra crossed product. The index theorem of Connes–Moscovici allows to compute the Chern character of the K-cycle by local formulae involving connections and curvatures. It gives a topological interpretation to the anomaly, in the sense of noncommutative algebras.</abstract>
<subject><genre>MSC</genre>
<topic>19D55</topic>
<topic>81T13</topic>
<topic>81T50</topic>
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<topic>Quantum field theory</topic>
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<topic>K-theory</topic>
<topic>Cyclic cohomology</topic>
<topic>Gauge theories</topic>
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<identifier type="ISSN">0393-0440</identifier>
<identifier type="PII">S0393-0440(00)X0075-7</identifier>
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<detail type="volume"><number>39</number>
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<extent unit="issue-pages"><start>1</start>
<end>96</end>
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<extent unit="pages"><start>82</start>
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<identifier type="DOI">10.1016/S0393-0440(01)00002-X</identifier>
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