scholarly journals No-Core Shell Model for Nuclear Systems with Strangeness

2014 ◽  
Vol 55 (8-10) ◽  
pp. 857-860 ◽  
Author(s):  
D. Gazda ◽  
J. Mareš ◽  
P. Navrátil ◽  
R. Roth ◽  
R. Wirth
Keyword(s):  
Shell Model ◽  
Core Shell ◽  
Nuclear Systems

NEXT-GENERATION AB INITIO SHELL MODEL FOR EXOTIC NUCLEAR STRUCTURES

2010 ◽  
Vol 25 (21n23) ◽  
pp. 1980-1984
Author(s):  
J. P. DRAAYER ◽  
T. DYTRYCH ◽  
K. D. SVIRATCHEVA
Keyword(s):  
Ab Initio ◽  
Shell Model ◽  
Light Nuclei ◽  
Core Shell ◽  
High Deformation ◽  
Energy Dynamics ◽  
Shell Models ◽  
Nuclear Systems ◽  
Nuclear Structures ◽  
Open Core

A symmetry-adapted open-core shell model with SU (3) the underpinning symmetry is described. The model reduces to the well established Elliott SU (3) model in its 0ħΩ limit and to the no-core shell model (NCSM) – successful in describing low-energy dynamics of light nuclei – if stripped of its special symmetry considerations. We show that this approach is effective in providing an efficient description of low-lying eigenstates of 12 C and 16 O . A symmetry-guided framework is suggested based on our recent findings of low-spin and high-deformation dominance in realistic NCSM results. This holds promise to significantly enhance the reach of ab initio shell models toward heavier nuclear systems as well as descriptions of collective and cluster phenomena.

scholarly journals AbinitioNo-core Shell Model Calculations in a SU(3)-based Coupling Scheme

2012 ◽  
Vol 387 ◽  
pp. 012016
Author(s):  
T Dytrych ◽  
K D Launey ◽  
J P Draayer ◽  
D Langr
Keyword(s):  
Shell Model ◽  
Coupling Scheme ◽  
Core Shell ◽  
Model Calculations

scholarly journals Symplectic no-core shell-model approach to intermediate-mass nuclei

2014 ◽  
Vol 89 (3) ◽  
Author(s):  
G. K. Tobin ◽  
M. C. Ferriss ◽  
K. D. Launey ◽  
T. Dytrych ◽  
J. P. Draayer ◽  
...  
Keyword(s):  
Shell Model ◽  
Core Shell ◽  
Intermediate Mass ◽  
Model Approach

Nano-Goethite (α-FeOOH) Magnetic Structure Investigated Using Ising Core-Shell Model: Preliminary Study

2021 ◽  
Vol 1028 ◽  
pp. 193-198
Author(s):  
Budi Adiperdana ◽  
Nadya Larasati Kartika ◽  
Risdiana
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Shell Model ◽  
Magnetic Structure ◽  
Paramagnetic State ◽  
Core Shell ◽  
The Core ◽  
Preliminary Study

Ising core-shell model was proposed to reconstruct superparamagnetism hysteresis in nano-goethite (α-FeOOH). Core and shell set as antiferromagnetic and paramagnetic state respectively. Core and shell radius varies until the theoretical hysteresis fit with experiment hysteresis. At low temperature, the hysteresis reconstructed nicely with 55% antiferromagnetic core contribution and 45% paramagnetic shell contribution. At high temperature, the core-shell model show unrealistic result compared to the pure paramagnetic state.

scholarly journals Be7(p,γ)B8Sfactor fromab initiono-core shell model wave functions

2006 ◽  
Vol 73 (6) ◽  
Author(s):  
P. Navrátil ◽  
C. A. Bertulani ◽  
E. Caurier
Keyword(s):  
Shell Model ◽  
Wave Functions ◽  
Core Shell ◽  
Model Wave

scholarly journals Evaluation of Potential Function of Core-Shell Model for PbTiO3 Ferroelectric Material and Its Application for Polarization Calculation

2021 ◽  
Vol 31.2 (149) ◽  
pp. 72-78
Keyword(s):  
Shell Model ◽  
Remnant Polarization ◽  
Ferroelectric Material ◽  
Electric Polarization ◽  
Core Shell ◽  
Principle Calculation ◽  
First Principle Calculation ◽  
Compression Strain ◽  
Fitting Method ◽  
Polarization Calculation

In this study, the core-shell model is used to calculate the electric polarization for PbTiO3 ferroelectric material, in which, the interaction potential functions among atoms are determined by the fitting method based on the results from the first principle calculation. The investigations obtained show that the remnant polarization increases under tension and decreases under compression. The remnant polarization decreases with increasing the temperature. The phase transition from the ferroelectric phase to the paraelectric phase is determined at 605K and can occur at lower temperatures of 0K, 300K, 400K, 500K if the compression strain are 8%, 6%, 5%, 2%, corresponding. The hysteresis loop shrinks as the temperature increases and degrades into a curve at the temperature of 605K.

scholarly journals THE AB INITIO LARGE-BASIS NO-CORE SHELL MODEL

2005 ◽  
Author(s):  
B. R. BARRETT ◽  
P. NAVRÁTIL ◽  
A. NOGGA ◽  
W. E. ORMAND ◽  
I. STETCU ◽  
...  
Keyword(s):  
Ab Initio ◽  
Shell Model ◽  
Core Shell
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