准势方法中的高能散射
High Energy Scattering in the Quasi-Potential Approach
摘要：
在量子场论中重新考虑了高能定动量转移时两个标量粒子通过标量、矢量和张量交换的散射振幅的渐近行为。在准势方法和修正的微扰理论的框架下，发展和构造了一个寻找主导程函散射振幅及其修正的系统方案，讨论了准势方法和泛函方法所得解之间的联系，找到了主导程函振幅的第一修正.关键词：程函散射理论，量子引力.
英文摘要：
Asymptotic behavior of the scattering amplitude for two scalar particles by scalar, vector and tensor exchanges at high energy and fixed momentum transfers is reconsidered in quantum field theory. In the framework of the quasi-potential approach and the modified perturbation theory a systematic scheme of finding the leading eikonal scattering amplitudes and its corrections are developed and constructed.The connection between the solutions obtained by quasi-potential and functional approaches is also discussed.The first correction to leading eikonal amplitude is found. Keywords: Eikonal scattering theory, Quantum gravity.
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