Nuclear Wobbling Motion and Electromagnetic Transitions

The nuclear wobbling motion is studied from a microscopic viewpoint. It is shown that the expressions not only of the excitation energy but also of the electromagnetic transition rate in the microscopic RPA framework can be cast into the corresponding forms of the macroscopic rotor model. Criteria to identify the rotational band associated with the wobbling motion are given, based on which examples of realistic calculations are investigated and some theoretical predictions are presented.Comment: 39 pages, plain TeX, figures not included, available via conventional mai

Effects of a multi-quark interaction on color superconducting phase transition in an extended NJL model

We study the interplay of the chiral and the color superconducting phase transitions in an extended Nambu--Jona-Lasinio model with a multi-quark interaction that produces the nonlinear chiral-diquark coupling. We observe that this nonlinear coupling adds up coherently with the \omega^2 interaction to produce the chiral-color superconductivity coexistence phase or cancel each other depending on its sign. We discuss that large coexistence region in the phase diagram is consistent with the quark-diquark picture for the nucleon whereas its smallness is the prerequisite for the applicability of the Ginzburg-Landau approach.Comment: 9 pages, 3 figure

Critical endpoint in the Polyakov-loop extended NJL model

The critical endpoint (CEP) and the phase structure are studied in the Polyakov-loop extended Nambu--Jona-Lasinio model in which the scalar type eight-quark (\sigma^4) interaction and the vector type four-quark interaction are newly added. The \sigma^4 interaction largely shifts the CEP toward higher temperature and lower chemical potential, while the vector type interaction does oppositely. At zero chemical potential, the \sigma^4 interaction moves the pseudo-critical temperature of the chiral phase transition to the vicinity of that of the deconfinement phase transition.Comment: 13 pages, 6 figures embedded, accepted for publication in Phys. Lett.

Effects of Meson Mass Decrease on Superfluidity in Nuclear Matter

We calculate the $^1S_0$ pairing gap in nuclear matter by adopting the "in-medium Bonn potential" proposed by Rapp et al. [e-print nucl-th/9706006], which takes into account the in-medium meson mass decrease, as the particle-particle interaction in the gap equation. The resulting gap is significantly reduced in comparison with the one obtained by adopting the original Bonn potential.Comment: 10 pages, 3 figures, uses elsart. Text has been revised. To appear in Phys. Lett.

Chiral phase transition in an extended NJL model with higher-order multi-quark interactions

The chiral phase transition is studied in an extended Nambu--Jona-Lasinio model with eight-quark interactions. Equations for scalar and vector quark densities, derived in the mean field approximation, are nonlinear and mutually coupled. The scalar-type nonlinear term hastens the restoration of chiral symmetry, while the scalar-vector mixing term makes the transition sharper. The scalar-type nonlinear term shifts the critical endpoint toward the values predicted by lattice QCD simulations and the QCD-like theory.Comment: 11pages, 7 figure

Phenomenological construction of a relativistic nucleon-nucleon interaction for the superfluid gap equation in finite density systems

We construct phenomenologically a relativistic particle-particle channel interaction which suits the gap equation for nuclear matter. This is done by introducing a density-independent momentum-cutoff parameter to the relativistic mean field (Hartree and Hartree-Fock) models so as to reproduce the pairing properties obtained by the Bonn-B potential and not to change the saturation property. The interaction so obtained can be used for the Relativistic Hartree-Bogoliubov calculation, but some reservation is necessary for the Relativistic Hartree-Fock-Bogoliubov calculation.Comment: 30 pages, 18 eps figures, uses elsart. Major revision --- Hartree-Fock calculations are added. To appear in Nuclear Physics

「 ネットワーク オ リヨウ シタ ソウホウコウセイ ノ アル コンテンツ ノ プログラミング 」 ト 「 ケイソク ・ セイギョノプログラミング 」 ノ トウゴウ キョウザイ ノ カイハツ

The need for effective chemical water monitoring is evident. Indeed the overall management and decision making system driven by the Water Framework Directive (WFD) and other European water policies is strongly dependent on monitoring data. Because the overall decision making process relies, most of the time, on acquired data, it puts considerable pressures on the display of high quality chemical environmental measurements. However, performing fit for purpose measurements implies i) the demonstration of their metrological traceability ii), the evidence of their achievement thanks to accurate and sensitive analytical methods and iii) their statement with a realistic estimate of expanded uncertainty are thoroughly addressed. Concern regarding the presence of potentially active substances in surface waters was brought up by the end of the 90s. Intensive monitoring programs have revealed a chronic state of contamination of water systems by numerous molecules; pharmaceuticals have been highlighted as one of first concern for French aquatic system. This work demonstrates the consequences that (i) the sampling strategy and (ii) methodological and (iii) metrological laboratory choices may have on the measurements’ result. It reemphasizes that the main contribution to the uncertainty of measurement is linked to sampling uncertaint

Proton-neutron interaction in rotating odd-odd nuclei and its effects on signature splitting

Effects of the residual proton-neutron interaction in the rotating frame are studied by analyzing the signature inversion observed in odd-odd nuclei. In particular, the importance of configuration mixing induced by the interaction is stressed. Spectra given by the cranking model are improved appreciably but the effects of the residual interaction seem insufficient to reproduce experimental data

VALUATIONS OF LIE ALGEBRAS

We introduce the concept of valuations of Lie algebras and completions of valued Lie algebras. We show that if (L, | · |) is a valued Lie algebra then there is the unique completion (L , | · | ) up to isomorphism. We show that if a subalgebra H of L is a weak subideal of L (resp. a subideal of L, finitedimensional, soluble, nilpotent) then its topological closure H in (L , | · | ) is a weak subideal of L (resp. a subideal of L , finite-dimensional, soluble, nilpotent). We also introduce valuations |·| of the generalized Witt algebra WZ and present some properties of (W Z , | · |). Finally we illustrate the completion of (WZ, | · |) with a specific example

コドモ ノ シャカイノウ ケンキュウ 3

In this article we suggest a rereading of Helena (1876), by Machado de Assis, as a feuilleton on the pages of the newspaper O Globo, which was the support of the novel s original version. Regarding the intersection of the press and literature, we intend to reveal the possibilities of a reception with an emphasis on gender and understood according to its time. Thus, taking into account Helena s actions, we will analyze the specificity of a policy whose execution is based on the private space emphasized by the feminine that was, however, still preponderant in the public space, which was seen as a masculine environment. Ultimately, by combining class and gender, we intend to provide new nuances to the possibilities of actions created by women in the XIX century.Neste artigo, propomos uma releitura do folhetim Helena (1876), de Machado de Assis, em meio às páginas do jornal fluminense O Globo, este que serviu de suporte à versão original do romance. E considerando as intersecções entre imprensa e literatura, pretendemos revelar as possibilidades de uma recepção matizada pela questão do gênero e compreendida à roda de seu tempo. Assim, tendo por base as ações da protagonista Helena, nós nos deteremos na análise das especificidades de uma política exercida a partir do espaço privado tonalizado pelo feminino mas que também se fazia preponderante no meio público, tido por masculino. Enfim, conjugando classe e gênero, procuramos conferir novas nuances às possibilidades de ação criadas pelas mulheres no século XIX.917516