Two Particle States and the $S$-matrix Elements in Multi-channel Scattering

Details Two Particle States and the $S$-matrix Elements in Multi-channel Scattering Two Particle States and the $S$-matrix Elements in Multi-channel Scattering

2005-04-25

arxiv.org/abs/hep-lat/0504019v2

JHEP 0507:011,2005

Physics

High Energy Physics

High Energy Physics - Lattice

18 pages, no figures. minor changes compared with previous version

Scientific paper

10.1088/1126-6708/2005/07/011

Using a quantum mechanical model, the exact energy eigenstates for two-particle two-channel scattering are studied in a cubic box with periodic boundary conditions in all three directions. A relation between the exact energy eigenvalue in the box and the two-channel $S$-matrix elements in the continuum is obtained. This result can be viewed as a generalization of the well-known L\"uscher's formula which establishes a similar relation in elastic scattering.

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