Zobrazeno 1 - 10
of 63
pro vyhledávání: '"J. LeTourneux"'
Publikováno v:
Physical Review C. 56:2557-2564
Elementary demonstrations of the three-body Efimov effect are provided for several models involving a light particle and two heavy ones, and differing by the nature of the two-body (local or nonlocal) potentials which bind at zero energy the light pa
Autor:
Ralph Girard, J. LeTourneux
Publikováno v:
Physical Review C. 50:1233-1236
The van der Waals force induced by color-dependent confining potentials in nonrelativistic quark models of the [ital NN] interaction is investigated through a full resonating group calculation where the [ital NN] channel is coupled to a channel of tw
Autor:
J. LeTourneux, F. Vidal
Publikováno v:
Physical Review C. 45:418-429
A general discussion of nonrelativistic multichannel scattering for nonlocal potentials is presented. The approach is based on the extensive use of the Fredholm determinants that are associated with the integral equations occurring at various points
Autor:
J. LeTourneux, F. Vidal
Publikováno v:
Physical Review C. 45:430-436
The generalized Levinson theorem for systems involving nonlocal and confining potentials is illustrated by a nonrelativistic quark model for the {ital NN} interaction, formulated within the framework of the resonating group (RG) method. In order to a
Publikováno v:
Physical Review D. 43:1366-1374
We apply the Ljusternik-{hacek S}nirelman theory, a derivative of Morse theory, to the Skyrmion-Skyrmion potential in the two-flavor Skyrme model to look for the existence of new, static, classical solutions in the sector with baryon number two. Conc
Publikováno v:
Nuclear Physics A. 512:149-166
SO(3) gauge potentials are shown to arise in the Born-Oppenheimer description of the interaction between dipole and quadrupole vibrations in even-even spherical nuclei. The effective hamiltonian for the quadrupole motion is derived and its spectrum i
Properties of certain $q$-orthogonal polynomials are connected to the $q$-oscillator algebra. The Wall and $q$-Laguerre polynomials are shown to arise as matrix elements of $q$-exponentials of the generators in a representation of this algebra. A rea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7d8dba61e2e66b4d1ceb5fafa6ec839d
Publikováno v:
Physical Review C. 13:1780-1785
It is shown that, when a nucleus is subdivided into a core and a cloud for the calculation of transfer form factors, one should allow for the possible displacement of the core with respect to the center of mass of the entire nucleus. This leads to co
Autor:
J. Letourneux, M. Harvey
Publikováno v:
Nuclear Physics A. 424:419-427
General conditions are derived for matrix elements of a quark-confining potential that is assumed to yield the nucleon and delta spectra with oscillator variational states. Parameters are given for a particular functional form for the confining poten
Publikováno v:
Physical Review C. 8:2024-2028
The second- and third-order rearrangement contributions to the single-particle energies in $^{16}\mathrm{O}$ are calculated microscopically using the Sprung-de Tourreil force. The $s$-state second-order rearrangement has been evaluated by an energy-a