Self Interaction Corrections
Mostrando 1-3 de 3 artigos, teses e dissertações.
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1. Self-interaction corrections in density functional theory: investigation in models of many-body systems / Correções de auto-interação na teoria do funcional da densidade: investigação em modelos de sistemas de muitos corpos
Neste trabalho utilizamos sistemas modelos no desenvolvimento, implementação e análise de funcionais orbitais da densidade, focando, em particular, nas correções de autointeração de Perdew-Zunger (PZSIC) e Lundin-Eriksson (LESIC). Aplicamos as correções de auto-interação ao funcional local (LDA) do modelo de Hubbard e de poços quânticos semicond
Publicado em: 2010
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2. Fractal propagators in QED and QCD and implications for the problem of confinement
We show that QED radiative corrections change the propagator of a charged Dirac particle so that it acquires a fractional anomalous exponent connected with the fine structure constant. The result is a nonlocal object which represents a particle with a roughened trajectory whose fractal dimension can be calculated. This represents a significant shift from the
Brazilian Journal of Physics. Publicado em: 2007-03
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3. Modelos Efetivos para o Elétron / Effective Models for the Electron
We present two models for the electron in classical electrodynamics, which include some effects from quantum electrodynamics. In the first model, the electron is treated as an extended particle owing to the high-frequency oscillations (Zitterbewegung) of its electrical charge. We show that this model predicts correctly the magnitude of the electron spin and
Publicado em: 2003