From the Feynman-Schwinger representation to the nonperturbative relativistic bound state interaction

Journal Article · Fri Aug 01 04:00:00 EDT 1997 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.56.1445· OSTI ID:527110

Brambilla, N; Vairo, A ^[1]

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1. Institut fuer Theoretische Physik, Universitaet Heidelberg Philosophenweg 16, D-69120 Heidelberg (Federal Republic of Germany)

We write the four-point Green function in QCD in the Feynman-Schwinger representation and show that all the dynamical information is contained in the Wilson loop average. We work out the QED case in order to obtain the usual Bethe-Salpeter kernel. Finally we discuss the QCD case in the nonperturbative regime giving some insight into the nature of the interaction kernel. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 527110
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 3 Vol. 56; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BETHE-SALPETER EQUATION
BOUND STATE
FEYNMAN PATH INTEGRAL
GREEN FUNCTION
KERNELS
QUANTUM CHROMODYNAMICS
QUANTUM ELECTRODYNAMICS
SCHWINGER FUNCTIONAL EQUATIONS
WILSON LOOP