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Slobodrian, R.J.; Cujec, B.; Ramavataram, K.
Laval Univ., Quebec City (Canada)1975
Laval Univ., Quebec City (Canada)1975
AbstractAbstract
[en] Nucleon-nucleon interactions at all energies, meson-nucleon and meson-deuteron interactions, nuclear bremsstrahlung, on-shell and off-shell interactions, final-state interactions, bound and scattering states, few-body forces, polarization phenomena, short range correlations, quasi-free scattering, composite hadron models, subnucleon structure, multiparticle and coherent production processes, break-up reactions, electrodisintegration, relativistic effects and future resources in nuclear and particle physics are discussed in relation to the state of few-body physics in 1974. (B.F.G.)
Original Title
Problemes a petit nombre de corps dans la physique du noyau et de particules elementaires
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1975; 851 p; Les presses de l'Universite Laval; Quebec, Canada; International conference on few body problems in nuclear and particle physics; Quebec, Canada; 27 Aug 1974; ISBN 0-7746-6752-4; ; 197 papers.
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BOUND STATE, BREAKUP REACTIONS, BREMSSTRAHLUNG, COHERENT PRODUCTION, COMPOSITE MODELS, FADDEEV EQUATIONS, FINAL-STATE INTERACTIONS, FOUR-BODY PROBLEM, MESON REACTIONS, NEUTRON REACTIONS, NUCLEON-NUCLEON INTERACTIONS, POLARIZED BEAMS, POLARIZED TARGETS, PROTON REACTIONS, RELATIVISTIC RANGE, SCATTERING, SPIN ORIENTATION, THREE-BODY PROBLEM
BARYON REACTIONS, BARYON-BARYON INTERACTIONS, BEAMS, ELECTROMAGNETIC RADIATION, ENERGY RANGE, EQUATIONS, HADRON REACTIONS, HADRON-HADRON INTERACTIONS, INTERACTIONS, MANY-BODY PROBLEM, MATHEMATICAL MODELS, NUCLEAR REACTIONS, NUCLEON REACTIONS, ORIENTATION, PARTICLE INTERACTIONS, PARTICLE MODELS, PARTICLE PRODUCTION, RADIATIONS, TARGETS
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[en] It has generally been accepted that a study of three-particle systems can yield new information regarding details of the two-particle interactions, and in particular the short distance behavior of the nuclear force. This possibility has stimulated a great deal of work on the trinucleon system during the past decade. In view of the nature of the results which this program has produced, it is my belief that we must reassess both our expectations of what can be learned from such studies, and the techniques which we apply to the problem. The basic idea of the boundary-condition (BC) approach is to characterize a three-body state in such a way as to completely isolate effects arising from the off-shell degrees of freedom. Neither half-on-shell t-matrices nor the Faddeev equations are required as a starting point. (author)
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Slobodrian, R.J.; Cujec, B.; Ramavataram, K. (eds.); Laval Univ., Quebec City (Canada); p. 28-43; ISBN 0-7746-6752-4; ; 1975; p. 28-43; Les presses de l'Universite Laval; Quebec, Canada; International conference on few body problems in nuclear and particle physics; Quebec, Canada; 27 Aug 1974; Invited paper, 7 refs.
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[en] Developments in the study of processes leading to a final state of three nucleons are reviewed in the light of exact calculations of breakup cross sections with separable potentials. (B.F.G.)
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Slobodrian, R.J.; Cujec, B.; Ramavataram, K. (eds.); Laval Univ., Quebec City (Canada); p. 382-394; ISBN 0-7746-6752-4; ; 1975; p. 382-394; Les presses de l'Universite Laval; Quebec, Canada; International conference on few body problems in nuclear and particle physics; Quebec, Canada; 27 Aug 1974; Invited paper, 33 refs.
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[en] It is reasonable to expect that any method for describing many-body scattering processes should satisfy at least four conditions: 1) the dynamics must be properly taken into account; 2) the kernel of the equation used in the method must have finite iterates that are connected; 3) the theory must have the requisite analytic structure; and 4) the effects of symmetries must be included. In addition, satisfaction of two other conditions is desirable, though not strictly necessary: 5) the equations should be free from spurious solutions; and 6) it should be possible to introduce unitary approximations in a relatively simple way. In contrast to current approaches where t operators correspond to the driving term in the operator matrix equation, we have recently developed a new method for treating the n-body problem, in which the terms corresponding to the driving term in the operator equation are channel interactions. Application of our method to the long unsolved electron-hydrogen scattering system has so far produced extremely encouraging results. (B.F.G.)
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Slobodrian, R.J.; Cujec, B.; Ramavataram, K. (eds.); Laval Univ., Quebec City (Canada); p. 47-59; ISBN 0-7746-6752-4; ; 1975; p. 47-59; Les presses de l'Universite Laval; Quebec, Canada; International conference on few body problems in nuclear and particle physics; Quebec, Canada; 27 Aug 1974; 28 refs.
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[en] To a large extent, the nuclear force is a two body force, so the two body problem is the central problem of nuclear physics. As the only two nucleon bound state, the deuteron has been the object of intense experimental and theoretical interest for four decades. Yet, our knowledge of this simplest of all nuclei is far from satisfactory. Many of its properties have been measured to great precision. To date, our understanding of its structure has remained much less precise. (author)
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Slobodrian, R.J.; Cujec, B.; Ramavataram, K. (eds.); Laval Univ., Quebec City (Canada); p. 475-496; ISBN 0-7746-6752-4; ; 1975; p. 475-496; Les presses de l'Universite Laval; Quebec, Canada; International conference on few body problems in nuclear and particle physics; Quebec, Canada; 27 Aug 1974; Invited paper, 83 refs.
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[en] Experimental data on total cross-sections and elastic scattering are reviewed from threshold to the GeV region, with particular attention to recent results. (author)
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Slobodrian, R.J.; Cujec, B.; Ramavataram, K. (eds.); Laval Univ., Quebec City (Canada); p. 267-286; ISBN 0-7746-6752-4; ; 1975; p. 267-286; Les presses de l'Universite Laval; Quebec, Canada; International conference on few body problems in nuclear and particle physics; Quebec, Canada; 27 Aug 1974; Invited paper, 40 refs.
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[en] The few body system is a rich source of information for hadron dynamics. How some of this information manifests itself and how the general constraints of quantum mechanics help or restrict its extraction will be discussed. Examples will include the theory of final state interactions, of meson-baryon resonances and of meson degrees of freedom in the nucleus. (author)
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Slobodrian, R.J.; Cujec, B.; Ramavataram, K. (eds.); Laval Univ., Quebec City (Canada); p. 2-11; ISBN 0-7746-6752-4; ; 1975; p. 2-11; Les presses de l'Universite Laval; Quebec, Canada; International conference on few body problems in nuclear and particle physics; Quebec, Canada; 27 Aug 1974; Invited paper, 14 refs.
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[en] Nuclear bremsstrahlung cross sections in few body systems from recent experiments are compared with a current theoretical explanation based on phase shifts describing the corresponding elastic scattering reactions. (B.F.G.)
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Slobodrian, R.J.; Cujec, B.; Ramavataram, K. (eds.); Laval Univ., Quebec City (Canada); p. 352-370; ISBN 0-7746-6752-4; ; 1975; p. 352-370; Les presses de l'Universite Laval; Quebec, Canada; International conference on few body problems in nuclear and particle physics; Quebec, Canada; 27 Aug 1974; Invited paper, 25 refs.
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[en] There has been an impressive quantity and quality of polarization data acquired during the past few years on the mass 3 to mass 6 systems, essentially with beams of polarized protons and deuterons. The discussion of polarization effects is limited to those of the three-nucleon system. (author)
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Slobodrian, R.J.; Cujec, B.; Ramavataram, K. (eds.); Laval Univ., Quebec City (Canada); p. 566-586; ISBN 0-7746-6752-4; ; 1975; p. 566-586; Les presses de l'Universite Laval; Quebec, Canada; International conference on few body problems in nuclear and particle physics; Quebec, Canada; 27 Aug 1974; Invited paper, 34 refs.
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[en] Although some variational calculations have been carried out a long time ago on the three-nucleon system, the actual solutions with complicated realistic two-nucleon interactions have been achieved quite recently. The main reasons for this are that on the one hand there existed no correct mathematical framework of the problem until the work of Faddeev, and on the other hand new computational techniques were needed to solve the resulting three-body equations. Here we would like to review one kind of computational method which has proven to be successful. (author)
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Slobodrian, R.J.; Cujec, B.; Ramavataram, K. (eds.); Laval Univ., Quebec City (Canada); p. 19-27; ISBN 0-7746-6752-4; ; 1975; p. 19-27; Les presses de l'Universite Laval; Quebec, Canada; International conference on few body problems in nuclear and particle physics; Quebec, Canada; 27 Aug 1974; Invited paper, 11 refs.
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