Acta Physica Hungarica

B. Chakrabarti

A. Bhattacharya

T.L. Remadevi

Acta physica Hungarica

Time dependence of the J / psi dissolution in the quark gluon plasma

J/ψ在夸克-胶子等离子体中溶解的时间依赖性

Brooding over bosons, wave packets and Bose Einstein correlations, we present a generic quantum mechanical system that contains arbitrary number of bosons characterized by wavepackets and that can undergo a Bose-Einstein condensation either by cooling, or increasing the number density of bosons, or by increasing the overlap of the multi-boson wave-packet states, achieved by changing the size of the single-particle wave-packets. We show that the n-particle correlations may mimic coherent or chaotic behavior for certain limiting wave-packet sizes. Effects of complete n-particle symmetrization are included. The resulting weights which fluctuate between 1 and n! are summed up with the help of a formal analogy between the considered wave-packet system and an already explored multi-boson plane-wave system. We solve the model analytically in the highly condensed and in the rare gas limiting cases, numerically in the intermediate cases. The relevance of the model to multi-pion production in high energy heavy ion physics as well as to the Bose-Einstein condensation of atomic vapors is discussed. As a by-product, a new class of probability distribution functions is obtained and the critical density for the onset of pion-lasing is derived. The multiplicity dependence of single-particle momentum distributions are predicted that could be utilized in future event-by-event measurements.

J. Zimanyi

T. Csorgo

Multiboson correlations using wave packets

使用波包的多玻色子关联

S.N. Banerjee

On some aspects of the dimensional properties of the quark gluon plasma

关于夸克-胶子等离子体维度特性的一些方面

Z. Gabos

Z. Neda

Construction of the Joos-Weinberg equation from Dirac equations

从狄拉克方程构建Joos-Weinberg方程

C. Wolf

Thermodynamic properties of black holes from an average over internal spinning states.

黑洞的热力学性质：对内部自旋态的平均研究

The structure of neutron-rich light nuclei around N = 20, 28 and 40 has been investigated at GANIL by means of in-beam gamma spectroscopy using both stable and radioactive beams. The neutron-rich Ni-66,Ni-68 have been produced from the fragmentation of a primary Zn-70 beam with a Ni target. Their reduced transition probabilities B(E2) from the 0(+) ground state to the first 2(+) state have been extracted from Coulomb excitation cross-section measurement. Some of the obtained results related to the effectiveness of the N = 40 spherical sub-shell closure are discussed. In-beam gamma -spectroscopy using fragmentation reactions of S-36 and Ca-48 beams on a Be target have been recently performed. Gamma-decay of relatively high-lying excited states has been measured for the first time in nuclei around Mg-32 and S-44. Level schemes are proposed and discussed for a large number of these neutron-rich nuclei around N = 20 and N = 28.

F. Azaiez

Structure of neutron-rich nuclei around N=20, 28 and 40 from in-beam gamma-spectroscopy

利用在束伽马谱学研究N=20、28和40附近丰中子核的结构

中子丰富核在N=20、28和40附近的结构：来自束内伽马谱学的研究

中子富余核在N=20、28和40附近的结构：从束内伽马谱学研究

中子丰富核在N=20、28和40附近的结构：从束内伽马谱学研究

Publication Information	Publisher: Akademiai Kiado，Publishing cycle: ，Journal Type: journal，Open Access Journals: No
Basic data	Year of publication: 1983，Proportion of original research papers: ，Self Citation Rate:， Gold OA Rate:

Acta Physica Hungarica

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Time dependence of the J / psi dissolution in the quark gluon plasma

Multiboson correlations using wave packets

On some aspects of the dimensional properties of the quark gluon plasma

Construction of the Joos-Weinberg equation from Dirac equations

Thermodynamic properties of black holes from an average over internal spinning states.

Structure of neutron-rich nuclei around N=20, 28 and 40 from in-beam gamma-spectroscopy

Structure of neutron-rich nuclei around N=20, 28 and 40 from in-beam gamma-spectroscopy

Structure of neutron-rich nuclei around N=20, 28 and 40 from in-beam gamma-spectroscopy

Structure of neutron-rich nuclei around N=20, 28 and 40 from in-beam gamma-spectroscopy

Structure of neutron-rich nuclei around N=20, 28 and 40 from in-beam gamma-spectroscopy