222 research outputs found
An application of the 3-dimensional q-deformed harmonic oscillator to the nuclear shell model
An analysis of the construction of a q-deformed version of the 3-dimensional
harmonic oscillator, which is based on the application of q-deformed algebras,
is presented. The results together with their applicability to the shell model
are compared with the predictions of the modified harmonic oscillator.Comment: 12 pages, LaTe
Symmetries and staggering effects in nuclear rotational spectra
We study the fine structure of nuclear rotational spectra on the basis of
both dynamical and discrete symmetry approaches. In this framework we show that
the odd--even (Delta I = 1) staggering effects observed in various rotational
bands carry detailed information about the collective band-mixing interactions
and the collective shape properties of heavy nuclei.Comment: LaTeX, 4 pages plus 1 figure (.ps). To appear in the proceedings of
the European Conference on the Structure of the Nucleus at the Dawn of the
Century (Bologna, Italy, 29/5/00-3/6/00), ed. G. Bonsignori et a
Simplified boson realization of the subalgebra of and matrix elements of quadrupole operators
A simplified boson realization of the subalgebra of is
constructed. A simplified form of the corresponding basis states is
obtained. The reduced matrix elements of a special second-rank tensor operator
(quadrupole operator) are calculated in the basis.Comment: 13 pages, LaTeX. Uses ioplppt.sty, iopl12.st
Self-similar solution of fast magnetic reconnection: Semi-analytic study of inflow region
An evolutionary process of the fast magnetic reconnection in ``free space''
which is free from any influence of outer circumstance has been studied
semi-analytically, and a self-similarly expanding solution has been obtained.
The semi-analytic solution is consistent with the results of our numerical
simulations performed in our previous paper (see Nitta et al. 2001). This
semi-analytic study confirms the existence of self-similar growth. On the other
hand, the numerical study by time dependent computer simulation clarifies the
stability of the self-similar growth with respect to any MHD mode. These
results confirm the stable self-similar evolution of the fast magnetic
reconnection system.Comment: 15 pages, 7 figure
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