Assignment of the vibronic level structure of trimeric copper (Cu3) ground state

1986 ◽  
Vol 90 (15) ◽  
pp. 3298-3301 ◽  
Author(s):  
Josef W. Zwanziger ◽  
Robert L. Whetten ◽  
Edward R. Grant
Keyword(s):  
Ground State ◽  
Level Structure ◽  
Vibronic Level

scholarly journals Hyperfine level structure in nitrogen-vacancy centers near the ground-state level anticrossing

2019 ◽  
Vol 100 (7) ◽  
Author(s):  
Marcis Auzinsh ◽  
Andris Berzins ◽  
Dmitry Budker ◽  
Laima Busaite ◽  
Ruvin Ferber ◽  
...  
Keyword(s):  
Ground State ◽  
Level Structure ◽  
State Level ◽  
Nitrogen Vacancy ◽  
Nitrogen Vacancy Centers ◽  
Ground State Level

scholarly journals Essentials of the macroscopic-microscopic folded-Yukawa approach and examples of its record in providing nuclear-structure data for simulations

2018 ◽  
Vol 184 ◽  
pp. 01013
Author(s):  
Peter Möller
Keyword(s):  
Nuclear Structure ◽  
Ground State ◽  
Neutron Emission ◽  
Level Structure ◽  
Model Development ◽  
State Level ◽  
Heavy Ion ◽  
Macroscopic Model ◽  
Model Description ◽  
Model Framework

The macroscopic-microscopic model based on the folded-Yukawa singleparticle potential and a “finite-range” macroscopic model is probably the approach that has provided the most reliable predictions of a large number of nuclear-structure properties for all nuclei between the proton and neutron drip lines. I will describe some basic features of the model and the development philosophy that may be the reason for its success. Examples of quantities modeled within the same model framework are, nuclear masses, ground-state level structure, including spins, ground-state shapes, fission barriers, heavy-ion fusion barriers, sub-barrier fusion cross sections, β-decay half-lives and delayed neutron emission probabilities, shape coexistence, and α-decay Qα energies to name a few. I will show how well it predicted various properties measured after published results. Rather than giving an incomplete model description here I will give a timeline of model development and provide references to typical applications and references that are sufficiently complete that several individuals have written computer codes based on these references, codes whose results have excellent agreement with ours.

FILLING LANDAU LEVELS: FERMI SEA GROUND STATE ENERGY, COMPETING INTERACTIONS AND MARGINAL DISPERSIONS IN GENERALIZED FLUX PHASES

1992 ◽  
Vol 06 (05n06) ◽  
pp. 563-583
Author(s):  
Benoit Douçot ◽  
Franco Nori ◽  
R. Rammal
Keyword(s):  
Kinetic Energy ◽  
Landau Level ◽  
Ground State Energy ◽  
Ground State ◽  
State Energy ◽  
Level Structure ◽  
Minimum Energy ◽  
Landau Levels ◽  
Integer Number ◽  
Local Minima

ABSTRACT: We review recent studies on the energetics of fermions confined to a two dimensional square lattice, and the relations of these results to mean-field approaches to the t−J model. Our goal has been to compute the kinetic energy of the Fermi sea of the spinless fermions for any value of the (1) fermion concentration, (2) magnetic flux, and (3) frustration. For the unfrustrated case, we confirm that the ground state energy, χ(Φ), is a minimum for Φ=π(1−δ), which corresponds to one flux quantum per spinless fermion. We then proceed to do a systematic study of frustration effects, coming from longer range couplings, which modify the picture obtained for the unfrustrated case. The frustrating influence of the kinetic energy of the holes (e.g., by breaking magnetic bonds and suppressing the long-range order present in the undoped systems) is the main focus of this work. We find that, in general, E(Φ) always exhibits cusp-like minima which position moves linearly as a function of the fermion density x. Frustration can induce a competition between different local minima. By first considering the local minima for one particle only, we can understand most of the qualitative features of E(Φ). These local minima occur at simple rational fractions of Φ0, and when the flux slightly deviates from these values a one-particle Landau level structure develops. It is precisely such a spectrum that generates a family of cusps that “move away” from the original flux value as x is increased. Every cusp corresponds to an integer number of filled Landau levels, and the minimum energy cusp corresponds to the one level case. Furthermore, we use perturbation theory, valid for low fermion density x, in order to analyze quantitatively the behavior of the cusp-like energy minima; which originate from the Landau level structure when the flux is close to a rational value. If the flux is slightly away from a given rational value [Formula: see text] each of the q subbands generates a secondary Landau level structure. We have derived a t2−t3 phase diagram indicating regions of similar behavior (i.e., adiabatic continuations can be performed with each region, preserving the E(Φ) structure) and the boundaries between them. We have studied several points belonging to those boundaries and found that anomalous behavior, (e.g., cancelation of the k2 term in the dispersion relation) induced by frustration, can occur.

scholarly journals Single vibronic level emission spectroscopic studies of the ground state energy levels and molecular structures of jet-cooled HGeBr, DGeBr, HGeI, and DGeI

2006 ◽  
Vol 125 (11) ◽  
pp. 114301 ◽  
Author(s):  
Brandon S. Tackett ◽  
Yunjing Li ◽  
Dennis J. Clouthier ◽  
Kezia L. Pacheco ◽  
G. Alan Schick ◽  
...  
Keyword(s):  
Ground State Energy ◽  
Ground State ◽  
State Energy ◽  
Energy Levels ◽  
Spectroscopic Studies ◽  
Molecular Structures ◽  
Vibronic Level

Many particle and many hole states in 31Mg

2006 ◽  
Vol 21 (31n33) ◽  
pp. 2461-2467
Author(s):  
Masaaki Kimura
Keyword(s):  
Molecular Dynamics ◽  
Magnetic Moment ◽  
Ground State ◽  
Level Structure ◽  
Magic Number ◽  
Theoretical Framework ◽  
Β Decay ◽  
Generator Coordinate Method ◽  
Coordinate Method ◽  
Generator Coordinate

The low-lying level structure of 31 Mg has been investigated by the theoretical framework of deformed-basis antisymmetrized molecular dynamics (DAMD) plus generator coordinate method (GCM) with the Gogny D1S force. It is shown that the N =20 magic number is broken and the intruder configuration (neutron 2p3h configuration) dominates the ground state. The observed data such as the magnetic moment and β decay strength are well reproduced.

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