Current conservation and interaction currents with relativistic separable interactions
May 21, 199147 pages
Published in:
- Phys.Rev.C 43 (1991) 2483-2498
Report number:
- CEBAF-TH-90-11
Citations per year
Abstract: (APS)
A method of minimal substitution is used to obtain the electromagnetic two-body interaction current operator associated with a relativistic separable interaction. The result is shown to satisfy a general restriction obtained from current conservation using the Ward-Takahashi identity within the Bethe-Salpeter formalism. It is shown that this two-body relativistic current operator can be reduced to an effective one-body form. Applications of this method to nuclear few-body systems, relativistic quark systems, and hadronic resonance processes are discussed. The numerical size of the interaction current for the pion charge form factor is estimated.- interaction: two-particle
- two-particle: interaction
- current: electromagnetic
- current: conservation law
- relativistic
- separable potential
- Bethe-Salpeter equation
- Ward-Takahashi identity
- pi: form factor
- form factor: pi
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