包含散射矩阵与准粒子的散射
Inclusive scattering matrix and scattering of quasiparticles
摘要：
量子理论可以用Weyl或Clifford代数上的正泛函（$L$ -泛函）的语言来表述。它表明，这种语言给出了简单的理解图的Keldysh形式主义（在我们的情况下，与图的热场动力学）。在$L$ -泛函的形式中，散射矩阵的矩阵元与包含截面有关，因此我们建议将这一概念命名为“包含散射矩阵”。散射矩阵可以用广义格林函数的壳层值表示。如果我们要分析准粒子的碰撞，这个概念是必要的。
英文摘要：
The quantum theory can be formulated in the language of positive functionals on Weyl or Clifford algebra ($L$-functionals). It is shown that this language gives simple understanding of diagrams of Keldysh formalism (that coincide in our case with the diagrams of thermo-field dynamics). The matrix elements of the scattering matrix in the formalism of $L$-functionals are related to inclusive cross-sections, therefore we suggest the name "inclusive scattering matrix" for this notion. The inclusive scattering matrix can be expressed in terms of on-shell values of generalized Green functions. This notion is necessary if we want to analyze collisions of quasiparticles.
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。
