改进自能对S-矩阵贡献行为的建议
Proposal to improve the behaviour of self-energy contributions to the S-matrix
摘要：
提出了一种简单的S-矩阵定义的修正。可以预料，与非零自能相关的发散在修正的定义下比在通常的定义下要温和得多。这一猜想在几个例子中使用微扰理论得到验证。所提出的公式是写在总哈密顿算子和自由哈密顿算子，因此适用于任何情况下，当这些哈密顿算子是已知的。
英文摘要：
A simple modification of the definition of the S-matrix is proposed. It is expected that the divergences related to nonzero self-energies are considerably milder with the modified definition than with the usual one. This conjecture is verified in a few examples using perturbation theory. The proposed formula is written in terms of the total Hamiltonian operator and a free Hamiltonian operator and is therefore applicable in any case when these Hamiltonian operators are known.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
