Electromagnetic currents and the Blankenbecler-Sugar equation

Journal Article · Mon Aug 15 04:00:00 EDT 1994 · Annals of Physics (New York); (United States)

DOI:https://doi.org/10.1006/aphy.1994.1076· OSTI ID:6826910

Coester, F ^[1]; Riska, D O ^[2]

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1. Argonne National Lab., IL (United States)
2. Univ. of Helsinki (Finland)

The effective electromagnetic current density for a two-nucleon system that is described by the Blankenbecler-Sugar equation is derived. In addition to the single nucleon currents there are exchange currents of two different origins. The first is the exchange current that is required to compensate for the violation of the continuity equation in the impulse approximation. The second is an exchange current, which arises in the quasipotential reduction from the Bethe-Salpeter equation and which represents effects of suppressed degrees of freedom. Explicit general expressions are given for both of these exchange currents. The results are applicable to both elastic and inelastic processes. 26 refs.

• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6826910
• Journal Information: Annals of Physics (New York); (United States), Journal Name: Annals of Physics (New York); (United States) Vol. 234:1; ISSN 0003-4916; ISSN APNYA6
• Country of Publication: United States
• Language: English

Related Subjects

663430* -- Nucleon-Induced Reactions & Scattering-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON-BARYON INTERACTIONS
BETHE-SALPETER EQUATION
BLANKENBECLER-SUGAR EQUATIONS
CURRENT DENSITY
ELECTROMAGNETIC FORM FACTORS
EQUATIONS
FORM FACTORS
HADRON-HADRON INTERACTIONS
INTEGRAL EQUATIONS
INTERACTIONS
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE PROPERTIES