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Determinant Monte Carlo algorithms for dynamical quantities in fermionic systems

  • Université Paris-Saclay
  • Collège de France

Research output: Contribution to journalArticlepeer-review

Abstract

We introduce and compare three different Monte Carlo determinantal algorithms that allow one to compute dynamical quantities, such as the self-energy, of fermionic systems in their thermodynamic limit. We show that the most efficient approach expresses the sum of a factorial number of one-particle-irreducible diagrams as a recursive sum of determinants with exponential complexity. By comparing results for the two-dimensional Hubbard model with those obtained from state-of-the-art diagrammatic Monte Carlo, we show that we can reach higher perturbation orders and greater accuracy for the same computational effort.

Original languageEnglish
Article number085117
JournalPhysical Review B
Volume97
Issue number8
DOIs
Publication statusPublished - 12 Feb 2018
Externally publishedYes

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