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Dimensional regularization of composite operators in scalar field theory: Lowell S. Brown. CERN, Geneva, Switzerland, and Institute for Advanced Study, Princeton, New Jersey 08540


Publisher
Elsevier Science
Year
1980
Tongue
English
Weight
58 KB
Volume
125
Category
Article
ISSN
0003-4916

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Dimensional renormalization of sealar fi
๐Ÿ“‚ Article ๐Ÿ“… 1980 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 86 KB

Consider -A + XV with V short range at a value &, where some eigenvalue e(h) -0 as X L h, ' We analyze two questions: (i) What is the leading order of e(h), i.e., for what 4 does e(X) N c(X-&,)a? (ii) Is e(X) analytic at X = &, and, if not, what is the natural expansion parameter? The results are hi