Dirac Oscillator
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. Equivalence between the Dirac oscillator and a spin-1/2 fermion embedded in a transverse homogeneous magnetic field: movement in a (2 + 1)-dimensional world
Abstract It is shown that the Dirac oscillator in a (2+1)-dimensional spacetime can be interpreted as a spin-1/2 fermion embedded in a transverse homogeneous magnetic field.
Rev. Bras. Ensino Fís.. Publicado em: 07/10/2019
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2. Equivalence between the planar Dirac oscillator and a spin-1/2 fermion embedded in a transverse homogeneous magnetic field
Abstract It is shown that a spin-1/2 fermion coupled to the axially symmetric electromagnetic vector potential has the same matrix structure as that one for the planar Dirac oscillator. In particular, the planar Dirac oscillator can be interpreted as a charged particle minimally coupled to a transverse homogeneous magnetic field.
Rev. Bras. Ensino Fís.. Publicado em: 10/07/2019
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3. Propriedades eletrônicas de grafeno com defeitos
No limite de baixas energias, o grafeno pode ser descrito por uma teoria de férmions livres sem massa. Neste trabalho, escrevemos uma métrica não-Euclidiana que representa o grafeno e introduzimos um campo de gauge não-Abeliano devido a presença de defeitos topológicos (desclinações). Neste pano de fundo, estudamos o espalhamento elástico de férmio
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/08/2011
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4. Oscilador de Dirac: ImplicaÃÃes da violaÃÃo da simetria de Lorentz e da massa dependente da posiÃÃo.
In this work we study the Dirac Oscillator (DO) in a threefold way. In the first way, we study DO with Lorentz symmetry violation. This violation is implemented through vectorial and an axial terms. We realize a non-relativistic limit and we obtain that the background vector field does not modify the energy spectrum. However, in the case of the background ax
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/07/2008
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5. Thermodynamics properties of the Dirac oscillator and some contributions of the function theta of Jacobi / Propriedades termodinÃmicas do oscilador de Dirac e algumas contribuiÃÃes da funÃÃo theta de Jacobi
In this work we analyze the three-dimensional Dirac oscillator in a thermal bath. We found that the heat capacity is two times greather than the heat capacity of the one-dimensional Dirac oscillator in the higher temperatures. We begin with the energy spectrum of the three-dimensional Dirac oscillator, then we find the partition functions and others thermody
Publicado em: 2007
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6. On some classical and quantum effects due to gravitational fields
We consider the gravitational fields generated by a cosmic string, a global monopole and a tubular matter with interior magnetic field (Safko-Witten space-time), and examine some classical and quantum effects due to these fields. We investigate the Aharonov-Bohm effect in the space-time of a cosmic string, using the loop variables. In the space-time of a glo
Brazilian Journal of Physics. Publicado em: 2006-03
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7. Introdução de um "Quantum" de tempo no formalismo da mecanica quantica
Discovered nearly a century ago, the electron is still a stranger in the context of classical electromagnetism. Many models have been proposed in order to describe it. In this sense, the most successful theory is the one proposed by Dirac in 1938, notwithstanding some drawbacks such as the existence of pre-accelerating and self-accelerating solutions. An alt
Publicado em: 1994