Colóquio de Física

• Responsável: PPG-FIS
• Câmpus: Santo André
• Local: meet.google.com/zso-izgq-pqc
• Data: 22/09/2021
• Horário: 14:00 às 16:00
• Descrição:

  Palestrante: João Nuno Barbosa Rodrigues (UFABC)
  Title: Constructing realistic low-energy effective models of materials

  Abstract: Recent advances in algorithms and computer performance enabled us to accurately simulate the many-body problem of systems with a few hundred electrons. Still, this is often too small to allow for realistic studies of low-energy properties of materials which generally take place at much larger length scales. Condensed Matter physicists thus frequently resort to working with simple effective models, justified by
  clever physical arguments and experimental observations. Such models
  often provide valuable physical insight and enable larger length-scale
  studies. However, since model parameters are invariably unknown, this
  approach often lacks predictive power, an issue that turns more
  significant in materials with strong electronic correlations. Being able
  to controllably construct accurate effective models of materials would
  allow us to bypass this conundrum. In this colloquium I will present a
  methodology that attempts to fill this gap by using highly accurate
  many-body simulations of a material to inform the construction of
  effective model Hamltonians that approximate the material’s low-energy

• Necessita inscrição: Não
• Link de divulgação: https://bit.ly/37sbEw9

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