Zobrazeno 1 - 10 of 68 pro vyhledávání: '"J S Levinger"'
1
Correlated hyperspherical harmonics: Application to systems of three bosons
Autor: J. S. Levinger, W. Zickendraht
Publikováno v: Annalen der Physik. 508:533-538
We study the use of expansions in correlated hyperspherical harmonics to calculate the energy of the ground state of a system of three identical spinless bosons, for a model potential. In our model the potential is the sum of a harmonic oscillator an
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1a1dc336d8da6b04e8ea75ed7eab3d10
https://doi.org/10.1002/andp.2065080605
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3
Application of Huang-Yang pseudopotential to a few-body system
Autor: J. S. Levinger
Publikováno v: Annalen der Physik. 509:395-402
Huang and Yang replace a hard core of radius c by their pseudopotential (HYPP), which can be used in perturbation theory. I show that HYPP and boundary value perturbation theory give the same energy shift, to first order in c. I model a two-body pote
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8f97919c26eb88ae642b0db8c8e12a1a
https://doi.org/10.1002/andp.19975090505
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5
Addendum to 'The quasi-deuteron model for the trinucleon'
Autor: J S Levinger, B Gangopadhyay
Publikováno v: Journal of Physics G: Nuclear and Particle Physics. 19:1417-1422
Gangopadhyay and Levinger applied the quasi-deuteron model to the trinucleon, and found that the number of quasi-deuterons is constant. I use new data for the monopole form factor, and find that the number is constant for a wider range of momentum tr
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::abea27f58a3c09416eb1a58d6e1430a1
https://doi.org/10.1088/0954-3899/19/9/022
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6
The quasi-deuteron model for the trinucleon
Autor: J S Levinger, B Gangopadhyay
Publikováno v: Journal of Physics G: Nuclear and Particle Physics. 18:1933-1942
The authors examine the accuracy of the quasi-deuteron model (QD) work for the trinucleon, for processes that involve small separations of a nucleon-nucleon pair. They find that the QD model is accurate to 10% for the trinucleon wavefunction, for sep
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e617870f066c4319d838756f32fc4906
https://doi.org/10.1088/0954-3899/18/12/009
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7
Correlated hyperspherical harmonics
Autor: J. S. Levinger, W. Zickendraht
Publikováno v: Annalen der Physik. 504:110-116
The expansion of the wavefunction for a bound three particle state in the five-dimensional hyperspace of hyperspherical harmonics in some cases suffers bad convergence, especially for weakly bound states. For this reason correlated hyperspherical har
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f596d06b2e0b1a323f580ca0c7100513
https://doi.org/10.1002/andp.19925040207
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8
Separable Approximations to the Helium Trimer
Autor: J. S. Levinger, Roger Loucks
Publikováno v: Annalen der Physik. 503:115-120
We extend Blatt's and Lim's calculations for the energy of the helium trimer (4He)3, for a Herzfeld potential. We use the unitary pole approximation. We constrain the effective range and scattering lenght to values of 7.4 A and infinity, respectively
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::674ed2bfa0c0ac6c5c6aca23586b1677
https://doi.org/10.1002/andp.19915030111
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