Renormalization of the three-body system with short-range interactions

被引:478
作者
Bedaque, PF [1 ]
Hammer, HW
van Kolck, U
机构
[1] Univ Washington, Inst Nucl Theory, Seattle, WA 98195 USA
[2] TRIUMF, Vancouver, BC V6T 2A3, Canada
[3] CALTECH, Kellogg Radiat Lab, Pasadena, CA 91125 USA
[4] Univ Washington, Dept Phys, Seattle, WA 98195 USA
关键词
D O I
10.1103/PhysRevLett.82.463
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We discuss renormalization of the nonrelativistic three-body problem with short-range forces. The problem becomes nonperturbative at momenta of the order of the inverse of the two-body scattering length, and an infinite number of graphs must be summed. This summation leads to a cutoff dependence that does not appear in any order in perturbation theory. We argue that this cutoff dependence can be absorbed in a single three-body counterterm and compute the running of the three-body force with the cutoff. We comment on the relevance of this result for the effective field theory program in nuclear and molecular physics. [S0031-9007(98)08276-3].
引用
收藏
页码:463 / 467
页数:5
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