Akama K, Hattori T. Exact scale invariance of composite-field coupling constants.
PHYSICAL REVIEW LETTERS 2004;
93:211602. [PMID:
15600994 DOI:
10.1103/physrevlett.93.211602]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2004] [Indexed: 05/24/2023]
Abstract
We show that the coupling-constant of a quantum-induced composite field is scale invariant due to its compositeness condition. It is first demonstrated in next-to-leading order in 1/N in typical models, and then we argue that it holds exactly.
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