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Teoria do funcional da densidade acoplada ao modelo de Hubbard de uma banda aplicada ao supercondutor La2−xSrxCuO4
(Universidade Federal de Santa Maria, 2020-09-15)
In this work we present the results of a methodology that combines first-principle Density
Functional Theory calculations with the Green’s functions method in order to treat strongly
correlated electronic systems. The ...
Um pipeline de redução de dados espectroscópicos para eventos de quilonova
(Universidade Federal de Santa Maria, 2020-11-09)
This work presents the process of making a pipeline for the reduction of longslit spectroscopic
data, acquired with the GMOS instrument of the Gemini Observatory as part of the optical
follow-up of kilonovae candidates. ...
Pseudogap e energia cinética de supercondutores não convencionais descritos por um modelo de Hubbard em duas dimensões
(Universidade Federal de Santa Maria, 2020-03-30)
In conventional superconductors described by the Bardeen-Cooper-Schrieffer (BCS) Theory,
the transition from the normal to the superconducting state is accompanied by a reduction
in the potential energy and an increase ...
Sistemas magnéticos com interações competitivas: uma abordagem de campo médio com clusters
(Universidade Federal de Santa Maria, 2020-04-27)
We study a model of localized spins which can assume three different states, S = 0 and
1, with two competing interactions: a antiferromagnetic first neighbour interaction (JA)
and a three body interaction between third ...
Análise da origem da emissão e cinemática do gás na região central da galáxia NGC4546
(Universidade Federal de Santa Maria, 2020-03-11)
It is believed that most spheroidal galaxies host a Supermassive Black Hole (SMBH) at their centers and that, at some point, it becomes active, originating an Active Galaxy Nuclei (AGN). The formation and evolution of the ...