Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Demetrio Vilardi"'
Publikováno v:
Physical Review Research, Vol 5, Iss 2, p 029004 (2023)
Externí odkaz:
https://doaj.org/article/9e5f74792e354a4f8419e454b45a6da0
Publikováno v:
Physical Review Research, Vol 4, Iss 1, p 013034 (2022)
We present a reformulation of the functional renormalization group (fRG) for many-electron systems, which relies on the recently introduced single-boson exchange (SBE) representation of the parquet equations [F. Krien, A. Valli, and M. Capone, Phys.
Externí odkaz:
https://doaj.org/article/455caa190d51437b96ac14f1bb91fc11
Autor:
Kilian Fraboulet, Sarah Heinzelmann, Pietro M. Bonetti, Aiman Al-Eryani, Demetrio Vilardi, Alessandro Toschi, Sabine Andergassen
Publikováno v:
Kilian Fraboulet
Abstract We illustrate the algorithmic advantages of the recently introduced single-boson exchange (SBE) formulation for the one-loop functional renormalization group (fRG), by applying it to the two-dimensional Hubbard model on a square lattice. We
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::884991f87511bc4b31f039b96685818a
http://arxiv.org/abs/2206.14478
http://arxiv.org/abs/2206.14478
We present a reformulation of the functional renormalization group (fRG) for many-electron systems, which relies on the recently introduced single boson exchange (SBE) representation of the parquet equations [Phys. Rev. B 100, 155149 (2019)]. The lat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::950686a23adff188a5c9827a197611c0
We show that antiferromagnetic spin-density wave order in the two-dimensional Hubbard model yields a drop of the charge carrier density as observed in recent transport measurements for cuprate superconductors in high magnetic fields on entering the p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2b1218394045f93f62ff2c3a90c8404e
http://arxiv.org/abs/2002.02786
http://arxiv.org/abs/2002.02786
We analyze the interplay of antiferromagnetism and pairing in the two-dimensional Hubbard model with a moderate repulsive interaction. Coupled charge, magnetic, and pairing fluctuations above the energy scale of spontaneous symmetry breaking are trea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::57e6793f627533f5d45c9b39bc5ec49a
Using the dynamical mean-field theory (DMFT) as a `booster-rocket', the functional renormalization group (fRG) can be upgraded from a weak-coupling method to a powerful computation tool for strongly interacting fermion systems. The strong local corre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::460fe71e3b184c372e2808f57355bf5d
http://arxiv.org/abs/1810.02290
http://arxiv.org/abs/1810.02290
Publikováno v:
Physical Review B. 97
We compute the spin susceptibility of the two-dimensional Hubbard model away from half-filling, and analyze the impact of frequency-dependent vertex corrections as obtained from the dynamical mean field theory (DMFT). We find that the local dynamics
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2596a051bc78d2d8740fc21abdcc1b41
https://doi.org/10.1103/physrevb.97.235110
https://doi.org/10.1103/physrevb.97.235110
We derive functional flow equations for the two-particle vertex and the self-energy in interacting fermion systems which capture the full frequency dependence of both quantities. The equations are applied to the hole-doped two-dimensional Hubbard mod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::beeb37961eaaac74f9eafb4befc4759d