THE FEYNMAN-SCHWINGER REPRESENTATION FOR THE RELATIVISTIC 2-PARTICLE AMPLITUDE IN-FIELD THEORY

被引:88
|
作者
SIMONOV, YA [1 ]
TJON, JA [1 ]
机构
[1] INST THEORET PHYS,3508 TA UTRECHT,NETHERLANDS
关键词
D O I
10.1006/aphy.1993.1085
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The proper time path-integral representation for the two-body Green′s function is derived for several examples of field theory, e.g., the φ3 theory in 4d, scalar and spinor QED, and its properties are studied in the quenched approximation. The perturbative expansion is shown to coincide with the usual Feynman amplitudes. In the limit of one heavy mass one obtains the Klein-Fock-Gordon or Dirac equation for scalar and spinor particles, respectively. © 1993 Academic Press, Inc.
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页码:1 / 18
页数:18
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