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相关论文: Triaxial superdeformation in $^{40}$Ar

200 篇论文

The evolution of shapes and low-energy shape coexistence is analyzed in neutron-deficient Nd and Sm nuclei, using a five-dimensional quadrupole collective Hamiltonian (5DCH). Deformation energy surfaces, calculated with the relativistic…

核理论 · 物理学 2018-12-05 J. Xiang , Z. P. Li , W. H. Long , T. Nikši\' c , D. Vretenar

The role of hexadecapole correlations in the lowest superdeformed band of $^{194}$Hg is studied by self consistent mean field methods. The generator coordinate method with particle number projection has been applied using Hartree-Fock wave…

核理论 · 物理学 2009-10-28 P. Magierski , P. -H. Heenen , W. Nazarewicz

The attenuation factor F responsible for the decay out of a superdeformed (SD) band is calculated with the help of a statistical model. This factor is given by 1/F = (1 + Gamma(down) / Gamma(S)). Here, Gamma(S) is the width for the…

核理论 · 物理学 2009-01-23 H. A. Weidenmueller , P. von Brentano , B. R. Barrett

Nuclear magnetic dipole properties of ground bands and gamma-vibrational bands are studied for the first time using the triaxial projected shell model approach. The study is carried out for the Dy and Er isotopic chains, ranging from…

核理论 · 物理学 2009-11-07 Yang Sun , Javid A. Sheikh , Gui-Lu Long

We study an efficient way to enhance the measurability of the galaxy density and/or velocity power spectrum in redshift space. It is based on the angular decomposition with the Tripolar spherical harmonic (TripoSH) basis and applicable even…

宇宙学与河外天体物理 · 物理学 2020-08-04 Maresuke Shiraishi , Teppei Okumura , Naonori S. Sugiyama , Kazuyuki Akitsu

In the framework free triaxiality model branching ratio reduced E2-transitions probabilities are studied for the full region changes of the triaxiality parameter. The variables of quadrupole deformations $\beta_2$ and $\gamma$ are dynamic.…

核理论 · 物理学 2023-10-17 M. S. Nadirbekov , O. A. Bozarov , S. N. Kudiratov

Super- and highly-deformed rotational bands in the A ~ 60 mass region are studied within cranked relativistic mean field theory and the configuration-dependent shell-correction approach based on the cranked Nilsson potential. Both…

核理论 · 物理学 2009-10-31 A. V. Afanasjev , I. Ragnarsson , P. Ring

We study the ground state properties of an ABA-stacked trilayer graphene. The low energy band structure can be described by a combination of both a linear and a quadratic particle-hole symmetric dispersions, reminiscent of monolayer- and…

介观与纳米尺度物理 · 物理学 2012-03-08 Ralph van Gelderen , Lih-King Lim , C. Morais Smith

The superdeformation (SD) in non-rotating states is studied with the HF+BCS method using the Skyrme interaction. In applying the BCS theory, the seniority pairing force is employed, of which strengths are determined in order to reproduce…

核理论 · 物理学 2009-10-31 Satoshi Takahara , Naoki Tajima , Naoki Onishi

Neutron-deficient krypton isotopes are of particular interest due to the coexistence of oblate and prolate shapes in low-lying states and the transition of ground-state from one dominate shape to another as a function of neutron number. A…

核理论 · 物理学 2013-05-08 Y. Fu , H. Mei , J. Xiang , Z. P. Li , J. M. Yao , J. Meng

We present a detailed formalism of the microscopic particle-rotor model for hypernuclear low-lying states based on a covariant density functional theory. In this method, the hypernuclear states are constructed by coupling a hyperon to…

核理论 · 物理学 2015-04-21 H. Mei , K. Hagino , J. M. Yao , T. Motoba

A time dependent variational principle is used to dequantize a second order quadrupole boson Hamiltonian. The classical equations for the generalized coordinate and the constraint for angular momentum are quantized and then analytically…

核理论 · 物理学 2015-03-14 A. A. Raduta , R. Budaca , Amand Faessler

Large-amplitude dynamics of axial and triaxial quadrupole deformation in 24,26Mg, 24Ne, and 28Si is investigated on the basis of the quadrupole collective Hamiltonian constructed with use of the constrained Hartree-Fock-Bogoliubov plus the…

核理论 · 物理学 2011-02-02 Nobuo Hinohara , Yoshiko Kanada-En'yo

A superdeformed (SD) band has been identified in a non - alpha - conjugate nucleus 35Cl. It crosses the negative parity ground band above 11/2- and becomes the yrast at 15/2-. Lifetimes of all relevant states have been measured to follow…

The ground state of the two-dimensional three-band Hubbard model in oxide superconductors is investigated by using the variational Monte Carlo method. The Gutzwiller-projected BCS and spin- density wave (SDW) functions are employed in the…

强关联电子 · 物理学 2009-11-07 Takashi Yanagisawa , Soh Koike , Kunihiko Yamaji

An extensive, model-independent analysis of the nature of triaxial deformation in $^{76}$Ge, a candidate for neutrinoless double-beta ($0\nu\beta\beta$) decay, was carried out following multi-step Coulomb excitation. Shape parameters…

The newly developed multi-quasiparticle triaxial projected shell-model approach is employed to study the high-spin band structures in neutron-deficient even-even Ce- and Nd-isotopes. It is observed that gamma-bands are built on each…

核理论 · 物理学 2015-05-13 J. A. Sheikh , G. H. Bhat , R. Palit , Z. Naik , Y. Sun

We determine the ground-state phase diagram of the three-band Hubbard model across a range of model parameters using density matrix embedding theory. We study the atomic-scale nature of the antiferromagnetic (AFM) and superconducting (SC)…

强关联电子 · 物理学 2020-12-01 Zhi-Hao Cui , Chong Sun , Ushnish Ray , Bo-Xiao Zheng , Qiming Sun , Garnet Kin-Lic Chan

The extended coherent state model is further extended in order to describe two dipole bands of different parities. The formalism provides a consistent description of eight rotational bands. A unified description for spherical, transitional…

核理论 · 物理学 2009-11-11 A. A. Raduta , Al. H. Raduta , C. M. Raduta

Five supersymmetric scalar deformations of the AdS_5xS^5 geometry are investigated. By switching on condensates for the scalars in the N=4 multiplet with a form which preserves a subgroup of the original R-symmetry, disk and sphere…

高能物理 - 理论 · 物理学 2008-11-26 Jonathan P. Shock