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arXiv · 1304.3286

Flow equation of functional renormalization group for three-body scattering problems

Yuya Tanizaki
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Abstract

Functional renormalization group (FRG) is applied to the three-body scattering problem in the two-component fermionic system with an attractive contact interaction. We establish a new and correct flow equation on the basis of FRG and show that our flow equation is consistent with integral equations obtained from the Dyson-Schwinger equation. In particular, the relation of our flow equation and the Skornyakov and Ter-Martirosyan equation for the atom-dimer scattering is made clear.

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Yuya Tanizaki. 2013-04-11. Flow equation of functional renormalization group for three-body scattering problems. https://doi.org/10.1093/ptep/ptt092

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