On the three-particle analog of the Lellouch-Lüscher formula

Journal of High Energy Physics

Fabian Müller¹  Akaki Rusetsky² 

[1] Helmholtz-Institut für Strahlen- und Kernphysik (Theorie) and Bethe Center for Theoretical Physics, Universität Bonn, 53115, Bonn, Germany;Helmholtz-Institut für Strahlen- und Kernphysik (Theorie) and Bethe Center for Theoretical Physics, Universität Bonn, 53115, Bonn, Germany;Tbilisi State University, 0186, Tbilisi, Georgia;

关键词: Effective Field Theories;    Lattice QCD;    Lattice Quantum Field Theory;   

DOI  :  10.1007/JHEP03(2021)152

来源: Springer

【 摘 要 】

Using non-relativistic effective field theory, we derive a three-particle analog of the Lellouch-Lüscher formula at the leading order. This formula relates the three-particle decay amplitudes in a finite volume with their infinite-volume counterparts and, hence, can be used to study the three-particle decays on the lattice. The generalization of the approach to higher orders is briefly discussed.

【 授权许可】

CC BY