Perturbative renormalization of composite operators via flow equations. II: Short distance expansion (Q1803533)
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scientific article; zbMATH DE number 221161
| Language | Label | Description | Also known as |
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| English | Perturbative renormalization of composite operators via flow equations. II: Short distance expansion |
scientific article; zbMATH DE number 221161 |
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Perturbative renormalization of composite operators via flow equations. II: Short distance expansion (English)
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29 June 1993
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The authors derives the short distance expansion for a product of two (arbitrary) composite operators in the framework of the perturbative Euclidean massive \(\phi^ 4_ 4\) theory (Theorems 9 and 10) by using an extension of the differential flow equation method to Green functions with bilocal insertions, for whicha set of generalized Zimmermann identities and Löwenstein rules are also established.
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short distance expansion
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composite operators
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perturbative Euclidean massive \(\phi^ 4_ 4\) theory
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differential flow equation
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Green functions with bilocal insertions
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generalized Zimmermann identities
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Löwenstein rules
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