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Universidade de São Paulo (USP). Instituto de Física de São Carlos (IFSC) (Institutional affiliation from the last research proposal) Birthplace: Brazil
Luiz Nunes de Oliveira in research grants and scholarships supported by FAPESP.
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The LAC Connections Symposium 2026 will be held in partnership with the Brazilian Academy of Sciences, InterAmerican Network of Academies of Sciences, and FAPESP on August 25-27, 2026 in Sao Paulo, Brazil.The Connections to Sustain Science in Latin America program brings together outstanding early/mid-career scientists, engineers, and medical professionals (within 15 years of PhD graduati…
The research project will measure adiabaticity in an electron gas subject to a localized potential that varies on a controllable time scale. A tight-binding Hamiltonian discretized by a real-space formulation of the numerical renormalization-group procedure will describe the electron gas and determine its time evolution under the action of the localized potential. Of primary interest is t…
Reunião de Líderes de Agências de Fomento de diversos países, com o objetivo de discutir estratégias para construção de uma grande rede transnacional de pesquisa voltada para os dezessete tópicos na Agenda de Desenvolvimento Sustentável. (AU)
(Only some records are available in English at this moment)
The thrust of the proposal is the development of a new method. The research project will try to develop a numerical renormalization-group (NRG) procedure targeting time-dependent properties for simple models describing quantum dots coupled to electron gases. The formalism will exploit general properties of a continuous renormalization-group transformation distilled from the discrete trans…
The concrete objective of this proposal is to compute accurately the photoemission spectrum of a simple metal slightly above the threshold energy. In this spectral region, the Anderson catastrophe forces the photoemission rate to grow without limit as the frequency approaches the threshold. Physically, the excess energy above the threshold promotes conduction electrons from levels below t…
A molecular junction is a device comprising a molecule that bridges two electrodes to which it is electrically coupled. From the scientific viewpoint, the molecular junction is equivalent to the single-electron transistor (SET), in which a quantum dot bridges two otherwise independent two-dimensional electron gases. A gate potential controls the electronic occupation of the quantum dot. E…
We will study electrical conduction through an elementary nanostructured device: a quantum dot side-coupled to a quantum wire. In our model, the dot charge interacts with the charge in the Wannier orbital of the wire closest to the dot. We will rely on Density-Functional Theory (DFT) to diagonalize the model Hamiltonian and to compute the electronic density at the Wannier site. From that,…
(Only some records are available in English at this moment)
The objective of this project is methodological. The project will seek to develop the numerical method known as Density Matrix Renormalization Group (DMRG) with a focus on finding new implementations and ways to obtain Spectral Functions more efficiently. However, the main path to be followed is already paved and is based on fruitful works recently developed by Professor Jan von Delft's g…
This project aims to investigate the non-equilibrium phenomena near the quantum critical point presented in the two-channel Kondo problem. In this problem, the criticality emerge due to the competition between the two independent channels to screen the localized moment in a quantum dot. Such choice was motivated by recent experimental results in nanostructures, which describe the two-chan…