Three-body spectrum in a finite volume: the role of cubic symmetry

@inproceedings{Doring2018ThreebodySI,
  title={Three-body spectrum in a finite volume: the role of cubic symmetry},
  author={Michael Doring and H. Hammer and Maxim Mai and J.-Y. Pang and Akaki Rusetsky and Jianda Wu},
  year={2018}
}
The three-particle quantization condition is partially diagonalized in the center-of-mass frame by using cubic symmetry on the lattice. To this end, instead of spherical harmonics, the kernel of the Bethe-Salpeter equation for particle-dimer scattering is expanded in the basis functions of different irreducible representations of the octahedral group. Such a projection is of particular importance for the three-body problem in the finite volume due to the occurrence of three-body singularities… CONTINUE READING

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