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AbstractAbstract
[en] We present details of our recent calculation of α2 corrections to the parapositronium decay into two photons. These corrections are rather small and our final result for the parapositronium lifetime agrees well with the most recent measurement. Implications for orthopositronium decays are briefly discussed. (c) 2000 The American Physical Society
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Journal Article
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Numerical Data
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AbstractAbstract
[en] Published in summary form only
Source
1. Brazilian School on Semiconductor Physics; Campinas, SP (Brazil); 31 Jan - 11 Feb 1983
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Chadan, K.
Paris-11 Univ., 91 - Orsay (France). Lab. de Physique Theorique et Particules Elementaires1976
Paris-11 Univ., 91 - Orsay (France). Lab. de Physique Theorique et Particules Elementaires1976
AbstractAbstract
[en] The purpose of this study is to give an upper bound for the number of bound states of a short range and spherically symmetrical potential
[fr]
On a cherche a donner une limite superieure au nombre d'etats lies d'un potentiel a courte portee et de symetrie spheriquePrimary Subject
Source
Apr 1976; 9 p
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Report
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Tovey, S.N.
8th A.I.N.S.E. nuclear physics conference, 4th - 6th February 1980, held at the Australian National University, Canberra1980
8th A.I.N.S.E. nuclear physics conference, 4th - 6th February 1980, held at the Australian National University, Canberra1980
AbstractAbstract
No abstract available
Primary Subject
Source
Australian Inst. of Nuclear Science and Engineering, Lucas Heights; 80 p; 1980; p. 28; 8. A.I.N.S.E. nuclear physics conference; Canberra, Australia; 4 - 6 Feb 1980; Abstract only.
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Miscellaneous
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Conference
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Heusch, Bernard.
Strasbourg-1 Univ., 67 (France)1973
Strasbourg-1 Univ., 67 (France)1973
AbstractAbstract
No abstract available
Original Title
Etude du mecanisme de la reaction 12C (h,p) 14N entre 3 et 11MeV d'energie incidente
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Source
1973; 142 p; These (D. es S.).
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Report
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Thesis/Dissertation
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AbstractAbstract
[en] The major contributions of Richard H. Dalitz to hypernuclear physics, since his first paper in 1955 to his last one in 2005 covering a span of 50 years during which he founded and led the theoretical study of hypernuclei, are reviewed from a personal perspective. Topical remarks on the search for quasi-bound K-bar-nuclear states and on kaon condensation are made
Primary Subject
Source
S0375-9474(08)00084-5; Available from http://dx.doi.org/10.1016/j.nuclphysa.2008.02.297; Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
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Journal Article
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AbstractAbstract
[en] Necessary conditions and sufficient conditions in order to insure one bound state of given (l,m) are obtained for spheroidal potentials using the phase approach: the results are valid for potentials function only of one variable. These results reduce asymptotically to the conditions of Jost-Pais and Calogero in the spherical case and can be useful to detect inversion in the introduction of levels of a given potential
[fr]
Des conditions necessaires et des conditions suffisantes pour l'obtention d'un etat lie pour l'equation de Schroedinger sont obtenues en coordonnees spheroidales au moyen des equations de phase (equations de Riccati). La classe des potentiels envisages est restreinte aux potentiels dependant d'une seule variable. Ces conditions se reduisent asymptotiquement aux conditions de Jost-Pais et de Calogero etablies dans le cas spherique et peuvent etre utiles pour detecter des inversions dans l'introduction des niveaux d'un potentiel spheroidalOriginal Title
Potentiels spheroidaux pour l'equation de Schroedinger. I. Caracterisation d'un etat lie
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Journal Article
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Ann. Inst. Henri Poincare, Sect. A; v. 22(4); p. 291-304
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AbstractAbstract
[en] Using the adiabatic hyperspherical method, the authors investigate the spectrum of the helium trimer and explore the effects on the spectrum of varying the masses of the helium atoms as well as the interaction strength. They find that the only physical systems that have three-body bound states are 4He3 and 4He23He. They also determine the range of interaction strengths that result in halo states and examine in detail the special case of Efimov states for both physical and unphysical systems
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27. annual meeting of the Division of Atomic, Molecular and Optical Physics (DAMOP) of the American Physical Society (APS); Ann Arbor, MI (United States); 15-18 May 1996; CONF-9605105--
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[en] The conditions that must be fulfilled in order to apply the Hypervirial-Perturbative Methods for non-bound states are analysed. (author)
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AbstractAbstract
[en] Confinement of quarks is sometimes taken as some kind of dogma in the contemporary theory of strong interactions - quantum chromodynamics (QCD). As scientists the authors should not be content with that. Rather they should try to formulate what they mean by ''permanent confinement'' more precisely and then see whether the theory has this property or not. In these lectures the author first looks at some possible interpretations of ''confinement'' and their shortcomings and then turn to the most widely used rather pragmatic definition based on the somewhat unphysical notion of infinitely heavy external sources. The author describes what is known - or more precisely what I know - about the problem in this more limited sense and try to bring into focus some aspects that are insufficiently understood
Primary Subject
Source
Klinkhamer, F.R.; Halpern, M.B; vp; ISBN 9971-50-000-0;
; 1985; vp; World Scientific Pub. Co; Teaneck, NJ (USA)

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Book
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