scholarly journals Spectral properties of heterostructures containing half-metallic ferromagnets in the presence of local many-body correlations

2020 ◽  
Vol 2 (4) ◽  
Author(s):  
A. Weh ◽  
J. Otsuki ◽  
H. Schnait ◽  
H. G. Evertz ◽  
U. Eckern ◽  
...  
Keyword(s):  
Spectral Properties ◽  
Many Body ◽  
Half Metallic

Spectral properties of quasiparticles in silicon: A test of many-body theory

2003 ◽  
Vol 68 (23) ◽  
Author(s):  
A. S. Kheifets ◽  
V. A. Sashin ◽  
M. Vos ◽  
E. Weigold ◽  
F. Aryasetiawan
Keyword(s):  
Spectral Properties ◽  
Many Body ◽  
Many Body Theory ◽  
Body Theory

scholarly journals Design of auxiliary systems for spectroscopy

2020 ◽  
Vol 224 ◽  
pp. 424-447
Author(s):  
Marco Vanzini ◽  
Francesco Sottile ◽  
Igor Reshetnyak ◽  
Sergio Ciuchi ◽  
Lucia Reining ◽  
...  
Keyword(s):  
Spectral Properties ◽  
Density Functional ◽  
The Self ◽  
Many Body ◽  
Functional Theory ◽  
Correlation Kernel ◽  
Effective Potentials ◽  
Exchange Correlation ◽  
Self Energy ◽  
Many Body Perturbation Theory

In this contribution, we advocate the possibility of designing auxiliary systems with effective potentials or kernels that target only the specific spectral properties of interest and are simpler than the self-energy of many-body perturbation theory or the exchange–correlation kernel of time-dependent density-functional theory.

scholarly journals Weak-ergodicity-breaking via lattice supersymmetry

Quantum ◽  
2020 ◽  
Vol 4 ◽  
pp. 339 ◽  
Author(s):  
Federica Maria Surace ◽  
Giuliano Giudici ◽  
Marcello Dalmonte
Keyword(s):  
Spectral Properties ◽  
Lattice Models ◽  
Many Body ◽  
Weak Ergodicity ◽  
Numerical Evidence ◽  
Weak Ergodicity Breaking ◽  
Arbitrary Dimensions ◽  
Ergodicity Breaking

We study the spectral properties of D-dimensional N=2 supersymmetric lattice models. We find systematic departures from the eigenstate thermalization hypothesis (ETH) in the form of a degenerate set of ETH-violating supersymmetric (SUSY) doublets, also referred to as many-body scars, that we construct analytically. These states are stable against arbitrary SUSY-preserving perturbations, including inhomogeneous couplings. For the specific case of two-leg ladders, we provide extensive numerical evidence that shows how those states are the only ones violating the ETH, and discuss their robustness to SUSY-violating perturbations. Our work suggests a generic mechanism to stabilize quantum many-body scars in lattice models in arbitrary dimensions.

ChemInform Abstract: Half-Metallic Ferromagnets: From Band Structure to Many-Body Effects

ChemInform ◽  
2009 ◽  
Vol 40 (10) ◽  
Author(s):  
M. I. Katsnelson ◽  
V. Yu. Irkhin ◽  
L. Chioncel ◽  
A. I. Lichtenstein ◽  
R. A. de Groot
Keyword(s):  
Band Structure ◽  
Many Body ◽  
Half Metallic ◽  
Many Body Effects

scholarly journals Half-metallic ferromagnets: From band structure to many-body effects

2008 ◽  
Vol 80 (2) ◽  
pp. 315-378 ◽  
Author(s):  
M. I. Katsnelson ◽  
V. Yu. Irkhin ◽  
L. Chioncel ◽  
A. I. Lichtenstein ◽  
R. A. de Groot
Keyword(s):  
Band Structure ◽  
Many Body ◽  
Half Metallic ◽  
Many Body Effects

Novel simulation model for many-body multipole dispersion interactions

1998 ◽  
Vol 94 (3) ◽  
pp. 417-433 ◽  
Author(s):  
MARTIN VAN DER HOEF ◽  
PAUL MADDEN
Keyword(s):  
Simulation Model ◽  
Dispersion Interactions ◽  
Many Body

On the many-body theory of nuclear reactions

1968 ◽  
Vol 111 (1) ◽  
pp. 392-416 ◽  
Author(s):  
K DIETRICH ◽  
K HARA
Keyword(s):  
Nuclear Reactions ◽  
Many Body ◽  
Many Body Theory ◽  
The Many ◽  
Body Theory
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