New singularities in nonrelativistic coupled channel scattering. I. Second order | Zendy

N. N. Khuri | Zendy; Tai Tsun Wu | Zendy

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New singularities in nonrelativistic coupled channel scattering. I. Second order

Author(s) -

N. N. Khuri,

Tai Tsun Wu

Publication year - 1997

Publication title -

physical review. d. particles, fields, gravitation, and cosmology/physical review. d. particles and fields

Language(s) - English

Resource type - Journals

eISSN - 1089-4918

pISSN - 0556-2821

DOI - 10.1103/physrevd.56.6779

Subject(s) - gravitational singularity , physics , scattering , scattering amplitude , scattering theory , order (exchange) , quantum electrodynamics , channel (broadcasting) , range (aeronautics) , quantum mechanics , mathematical physics , classical mechanics , materials science , finance , economics , composite material , electrical engineering , engineering

New and surprising singularities are found in the forward scattering amplitude for non-relativistic potential scattering with coupled channels. In the simplest case of two coupled channels, these singularities appear when the energy dierence between the two channels is larger than the inverse range of the potential. They are similar to singularities recently discovered by one of us for potential scattering on R 3 S 1 .

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