Role of the infrared cutoff in fermion damping rates

Journal Article · Sun Aug 15 00:00:00 EDT 1993 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.48.1868· OSTI ID:7368906

Kobes, R ^[1]; Mak, K ^[2]

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1. Physics Department and Winnipeg Institute for Theoretical Physics, University of Winnipeg, Winnipeg, Manitoba R3B 2E9 (Canada)
2. Physics Department and Winnipeg Institute for Theoretical Physics, University of Manitoba, Winnipeg, Manitoba R3T 2N2 (Canada)

Recent studies show that an infrared cutoff plays a crucial role in obtaining gauge-independent damping rates for hot gauge theories calculated within the Braaten-Pisarski resummation scheme. In this Brief Report we consider further the main issue involved of when such a cutoff should be removed as the mass-shell limit is approached.

• OSTI ID: 7368906
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 48:4; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

662110* -- General Theory of Particles & Fields-- Theory of Fields & Strings-- (1992-)
662230 -- Quantum Chromodynamics-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
DAMPING
ELEMENTARY PARTICLES
ENERGY
FERMIONS
FIELD THEORIES
GAUGE INVARIANCE
GLUONS
INFRARED DIVERGENCES
INVARIANCE PRINCIPLES
POSTULATED PARTICLES
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
SELF-ENERGY