Background-field gauge and decoupling of massive fermions in unbroken gauge theories

Journal Article · Thu Sep 15 00:00:00 EDT 1983 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.28.1557· OSTI ID:5691801

Chattopadhyay, U

In an unbroken gauge theory with coupling constant g containing very heavy fermions of mass M, the low-energy phenomena involving the gauge bosons only can be described by a pure Yang-Mills theory with different coupling constant g( which can be determined as a function of g and M order by order in perturbation theory. Working in the background-field gauge we demonstrate by explicit calculation that the relation between g( and g and M up to two-loop orders is independent of the gauge-fixing parameter of the original theory.

• Research Organization: Institute for Theoretical Physics, State University of New York at Stony Brook, Stony Brook, New York 11794
• OSTI ID: 5691801
• Journal Information: Phys. Rev. D; (United States), Vol. 28:6
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
FERMIONS
GAUGE INVARIANCE
BOSONS
COUPLING CONSTANTS
MASS
PERTURBATION THEORY
PROPAGATOR
RENORMALIZATION
VACUUM POLARIZATION
WAVE FUNCTIONS
YANG-MILLS THEORY
FUNCTIONS
INVARIANCE PRINCIPLES
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