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arXiv 0901.0425nucl-th
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氘核光致衰变反应相对论研究中Siegert定理的推广

Extended Siegert Theorem in the Relativistic Investigation of the Deuteron Photodisintegration Reaction

S. G. Bondarenko, V. V. Burov, K. Yu. Kazakov, D. V. Shulga

摘要:

在Bethe-Salpeter形式框架下,利用推广的Siegert定理,研究了两体交换电流对氘核光致衰变反应的贡献.该定理允许用系统的扩展电偶极矩和磁偶极矩来表示反应振幅。由此产生的解析表达式是完美的平移和规范不变性。它允许进行计算的氘核光致蜕变截面和偏振可观的考虑到两体交换电流隐式。

英文摘要:

The contribution of the two-body exchange current is investigated for the reaction of the deuteron photodisintegration in the framework of the Bethe-Salpeter formalism and with using extended Siegert theorem. This theorem allow to express the reaction amplitude in terms of extended electric and magnetic dipole moments of the system. The resultant analytical expression is faultless with respect to both translation and gauge invariance. It permits to perform calculations of the deuteron photodisintegration cross section and polarization observables taking into account two-body exchange current implicitly.

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