Two particle states in an asymmetric box and the elastic scattering phases

Apr, 2004
18 pages
Published in:
  • Phys.Rev.D 70 (2004) 014505
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Abstract:
The exact two-particle energy eigenstates in a generic asymmetric rectangular box with periodic boundary conditions in all three directions are studied. Their relation with the elastic scattering phases of the two particles in the continuum are obtained for both D4D_4 and D2D_2 symmetry. These results can be viewed as a generalization of the corresponding formulae in a cubic box obtained by Luscher before. In particular, the s-wave scattering length is related to the energy shift in the finite box. Possible applications of these formulae are also discussed.
  • 12.38.Gc
  • 11.15.Ha
  • energy eigenstate: two-particle
  • elastic scattering
  • scattering length
  • group theory: representation
  • Helmholtz equation: solution
  • boundary condition