Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Marcel Klett"'
Publikováno v:
Frontiers in Physics, Vol 10 (2022)
We study the magnetic and spectral properties of a single-band Hubbard model for the infinite-layer nickelate compound LaNiO2. As spatial correlations turn out to be the key ingredient for understanding its physics, we use two complementary extension
Externí odkaz:
https://doaj.org/article/15a960ca48eb4017b588d615269a4092
Autor:
Alexander Wietek, Riccardo Rossi, Fedor Šimkovic, IV, Marcel Klett, Philipp Hansmann, Michel Ferrero, E. Miles Stoudenmire, Thomas Schäfer, Antoine Georges
Publikováno v:
Physical Review X, Vol 11, Iss 4, p 041013 (2021)
The physics of the triangular lattice Hubbard model exhibits a rich phenomenology, ranging from a metal-insulator transition, intriguing thermodynamic behavior, and a putative spin liquid phase at intermediate coupling, ultimately becoming a magnetic
Externí odkaz:
https://doaj.org/article/a4cab5bbe5da4b1fb202e76459ee915a
Autor:
Thomas Schäfer, Nils Wentzell, Fedor Šimkovic, IV, Yuan-Yao He, Cornelia Hille, Marcel Klett, Christian J. Eckhardt, Behnam Arzhang, Viktor Harkov, François-Marie Le Régent, Alfred Kirsch, Yan Wang, Aaram J. Kim, Evgeny Kozik, Evgeny A. Stepanov, Anna Kauch, Sabine Andergassen, Philipp Hansmann, Daniel Rohe, Yuri M. Vilk, James P. F. LeBlanc, Shiwei Zhang, A.-M. S. Tremblay, Michel Ferrero, Olivier Parcollet, Antoine Georges
Publikováno v:
Physical Review X, Vol 11, Iss 1, p 011058 (2021)
The Hubbard model represents the fundamental model for interacting quantum systems and electronic correlations. Using the two-dimensional half-filled Hubbard model at weak coupling as a testing ground, we perform a comparative study of a comprehensiv
Externí odkaz:
https://doaj.org/article/203133f3a68c4847877129268659a912
Autor:
Marcel Klett, Nils Wentzell, Thomas Schäfer, Fedor Simkovic, IV, Olivier Parcollet, Sabine Andergassen, Philipp Hansmann
Publikováno v:
Physical Review Research, Vol 2, Iss 3, p 033476 (2020)
We revisit the cellular dynamical mean-field theory (CDMFT) for the single-band Hubbard model on the square lattice at half filling, reaching real-space cluster sizes of up to 9×9 sites. Using benchmarks against direct lattice diagrammatic Monte Car
Externí odkaz:
https://doaj.org/article/d7b9004c90204282badb4b95031c49a8
Autor:
Riccardo Rossi, E. Miles Stoudenmire, Thomas Schäfer, Marcel Klett, Antoine Georges, Michel Ferrero, Philipp Hansmann, Fedor Simkovic, Alexander Wietek
Publikováno v:
Physical Review X
Physical Review X, American Physical Society, 2021, 11 (4), pp.041013. ⟨10.1103/PhysRevX.11.041013⟩
HAL
Physical Review X, Vol 11, Iss 4, p 041013 (2021)
Physical Review X, American Physical Society, 2021, 11 (4), pp.041013. ⟨10.1103/PhysRevX.11.041013⟩
HAL
Physical Review X, Vol 11, Iss 4, p 041013 (2021)
The physics of the triangular lattice Hubbard model exhibits a rich phenomenology, ranging from a metal-insulator transition, intriguing thermodynamic behavior, and a putative spin liquid phase at intermediate coupling, ultimately becoming a magnetic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b771d301992287cbcf59da01d3f5f26d
https://hal.archives-ouvertes.fr/hal-03313278
https://hal.archives-ouvertes.fr/hal-03313278
Autor:
Thomas Schäfer, Nils Wentzell, Olivier Parcollet, Sabine Andergassen, Philipp Hansmann, Fedor Simkovic, Marcel Klett
We revisit the cellular dynamical mean-field theory (CDMFT) for the single band Hubbard model on the square lattice at half filling, reaching real-space cluster sizes of up to 9 x 9 sites. Using benchmarks against direct lattice diagrammatic Monte Ca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::77e6fd11e63e923633ad50f11bdd6774
Topological edge states in the Su-Schrieffer-Heeger model subject to balanced particle gain and loss
Publikováno v:
The European Physical Journal D. 72
We investigate the Su-Schrieffer-Heeger model in presence of an injection and removal of particles, introduced via a master equation in Lindblad form. It is shown that the dynamics of the density matrix follows the predictions of calculations in whic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c412a50af587469af7861cb1bf62e55b
https://doi.org/10.1140/epjd/e2018-90502-3
https://doi.org/10.1140/epjd/e2018-90502-3
Publikováno v:
Physical Review A. 95
Non-Hermitian systems with $\mathcal{PT}$ symmetry can possess purely real eigenvalue spectra. In this work two one-dimensional systems with two different topological phases, the topological nontrivial phase (TNP) and the topological trivial phase (T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a1059da70bbaf0e775630dbe320ca2e
https://doi.org/10.1103/physreva.95.053626
https://doi.org/10.1103/physreva.95.053626
We study the behavior of the non-adiabatic population transfer between resonances at an exceptional point in the spectrum of the hydrogen atom. It is known that, when the exceptional point is encircled, the system always ends up in the same state, in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dab5a0608b31b8b17b2d96d9e4dc92d3
http://arxiv.org/abs/1511.01382
http://arxiv.org/abs/1511.01382
Publikováno v:
SciPost Physics, Vol 16, Iss 2, p 059 (2024)
The recently proposed center-focused post-processing procedure [Phys. Rev. Res. 2, 033476 (2020)] of cellular dynamical mean-field theory suggests that central sites of large impurity clusters are closer to the exact solution of the Hubbard model tha
Externí odkaz:
https://doaj.org/article/19aab7ea4fd943cf8d9cd63c0df2b16c