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  • 1
    Electronic Resource
    Electronic Resource
    Some nodal theorems for noncentral forces (1985)
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 26 (1985), S. 2161-2164 
    Details
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: Two lemmas are proved for local noncentral forces in multidimensional space. First, the lowest partial wave for the ground state is nodeless. Second, the lowest partial wave for the first excited state has at least one node. Ballot–Fabre de la Ripelle perturbation theory is also used to show that higher partial waves for the ground state have nodes near the positions of nodes (if any) in the corresponding element of the matrix element of the noncentral potential.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.526838
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  • 2
    Electronic Resource
    Electronic Resource
    Structure of the Proton (1964)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Nuclear and Particle Science 14 (1964), S. 135-174 
    Details
    ISSN: 0066-4243
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ns.14.120164.001031
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  • 3
    Electronic Resource
    Electronic Resource
    Theories of Photonuclear Reactions (1954)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Nuclear and Particle Science 4 (1954), S. 13-32 
    Details
    ISSN: 0066-4243
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ns.04.120154.000305
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    A model calculation for the ground state of 4He tetramer (1985)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 82 (1985), S. 905-911 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: We use the following approximation to the potential between two 4He atoms—V(r)=4420 exp(−r2/1.69)−1302 exp(−r2/2.44) (V in K, r in A(ring)). We use the hyperspherical harmonics expansion, with Fabre's optimal subset, to solve for the ground state of the 4He tetramer. The Schrödinger equation is transformed into an infinite set of second order coupled differential equations (CDE), which we truncate to M equations. We test our program for solving CDE in two appendices. We find that the energy for our model is less than −4.3 K.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.448519
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  • 5
    Electronic Resource
    Electronic Resource
    Unitary pole approximation andt-matrix perturbation theory in triton calculations (1974)
    Springer
    The European physical journal 266 (1974), S. 95-101 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We find that the quality of the fits of the UPAt-matrix to the exactt-matrix for a given potential do not depend strongly on specific features, such as locality or inclusion of spin orbit forces in the potential. The accuracy of the UPA fits suggests the employment oft-matrix perturbation theory in triton ground state calculations. The accuracy of first ordert-matrix perturbation theory is satisfactory for the rank two separable tensor Tabakin potential.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01668707
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  • 6
    Electronic Resource
    Electronic Resource
    How to build optimal subsets of hyperspherical harmonics (1988)
    Springer
    The European physical journal 330 (1988), S. 29-35 
    Details
    ISSN: 1434-601X
    Keywords: 21.80.+ ; 02
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract After a short revue of the resolution of few body problems with the hyperspherical harmonics formalism, we develop a method to generate an “optimal subset” of basis functions that approximate the exact wavefunction up to third order of perturbations. Examples are given for three-body systems, with emphasis on the hypertriton. In this latter case, numerical results show that our optimal subset gives an energy some 40 keV higher than that found using a complete set of hyperspherical harmonics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01287260
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