Gauge-invariant nuclear Compton amplitude manifesting low-energy theorems

Journal Article · Mon Dec 01 04:00:00 EST 1986 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.34.2029· OSTI ID:6938889

Friar, J L; Fallieros, S

The electromagnetic field representation of the nuclear electromagnetic interaction is developed, by extending previous work on the nuclear current (one-photon amplitude) to the nuclear Compton amplitude. The resulting form of the Compton amplitude is gauge invariant and, in transverse gauge, manifests the low-energy theorems for the 0/sup +/..-->..0/sup +/ case, which is discussed in detail. Deuteron forward photodisintegration is also studied numerically, and it is shown that the generalized Siegert form of the retarded electric dipole interaction efficiently incorporates pion-exchange currents implicitly, while large explicit forms of these currents are needed in the standard representation of the interaction. Gauge invariance and Reiss's strong-field momentum-translation approximation are also discussed.

• Research Organization: Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
• OSTI ID: 6938889
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 34:6; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

653003* -- Nuclear Theory-- Nuclear Reactions & Scattering
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BASIC INTERACTIONS
COMPTON EFFECT
DEUTERIUM TARGET
ELASTIC SCATTERING
ELECTROMAGNETIC INTERACTIONS
FRAGMENTATION
GAUGE INVARIANCE
HAMILTONIANS
INTERACTIONS
INVARIANCE PRINCIPLES
MATHEMATICAL OPERATORS
MATHEMATICS
NUCLEAR REACTIONS
NUMERICAL ANALYSIS
PARTICLE INTERACTIONS
PHOTON-BARYON INTERACTIONS
PHOTON-HADRON INTERACTIONS
PHOTON-NUCLEON INTERACTIONS
PHOTONUCLEAR REACTIONS
QUANTUM OPERATORS
SCATTERING
TARGETS