Three-body loss in lithium from functional renormalization

被引：26

作者：

Floerchinger, S. ^{[1
]}

Schmidt, R. ^{[1
]}

Wetterich, C. ^{[1
]}

机构：

[1] Heidelberg Univ, Inst Theoret Phys, D-69120 Heidelberg, Germany

来源：

PHYSICAL REVIEW A | 2009年 / 79卷 / 05期

关键词：

boson systems; bound states; energy gap; lithium; N-body problems; renormalisation; trions; ENERGY-LEVELS; SYSTEMS;

D O I：

10.1103/PhysRevA.79.053633

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We use functional-integral methods for an estimate of the three-body loss in a three-component Li-6 ultracold atom gas. We advocate a simple picture where the loss proceeds by the formation of a three-atom bound trimer state, the trion. In turn, the effective amplitude for the trion formation from three atoms is estimated from a simple effective boson exchange process. The energy gap of the trion and other key quantities for the loss coefficient are computed in a functional renormalization-group framework.

引用

页数：5

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