Abstract
A complete angular momentum analysis of the integral equations of motion for four identical spinless particles is given. After separation of the variables associated with rotation, the equations of motion take the form of an infinite set of coupled integral equations in three continuous variables. In general, the four-particle kinematic factors in the integral kernels are expressed as bilinear combinations of factors of the three-particle kinematic factors type. For the case of a separable two-particle interaction the equations obtained are simplified so that they are reduced to coupled integral equations in two continuous variables.
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Kharchenko, V.F., Shadchin, S.A. Angular momentum reduction in the four-body problem. Czech J Phys 27, 255–279 (1977). https://doi.org/10.1007/BF01587359
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DOI: https://doi.org/10.1007/BF01587359