A
Anna Kauch
Researcher at Vienna University of Technology
Publications - 43
Citations - 635
Anna Kauch is an academic researcher from Vienna University of Technology. The author has contributed to research in topics: Hubbard model & Anderson impurity model. The author has an hindex of 13, co-authored 39 publications receiving 429 citations. Previous affiliations of Anna Kauch include Academy of Sciences of the Czech Republic & University of Warsaw.
Papers
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Journal ArticleDOI
Tracking the Footprints of Spin Fluctuations: A MultiMethod, MultiMessenger Study of the Two-Dimensional Hubbard Model
Thomas Schäfer,Nils Wentzell,Fedor Simkovic,Yuan-Yao He,Cornelia Hille,Marcel Klett,Christian Eckhardt,Behnam Arzhang,Viktor Harkov,François-Marie Le Régent,Alfred Kirsch,Yan Wang,Aaram J. Kim,Evgeny Kozik,E. A. Stepanov,Anna Kauch,Sabine Andergassen,Philipp Hansmann,Daniel Rohe,Y. M. Vilk,James P.F. LeBlanc,Shiwei Zhang,Andre-Marie Tremblay,Michel Ferrero,Olivier Parcollet,Antoine Georges +25 more
TL;DR: In this paper, a comparative study of state-of-the-art quantum many-body methods is performed using the half-filled Hubbard model at weak coupling as testing grounds, with two numerically exact methods (diagrammatic and determinantal quantum Monte Carlo) serving as a benchmark.
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Generic Optical Excitations of Correlated Systems: π-tons.
TL;DR: It is proposed to call the derived polaritons π-tons, which yield the leading vertex correction to the optical conductivity in all correlated models studied: the Hubbard, the extended Hubbard model, the Falicov-Kimball, and the Pariser-Parr-Pople model.
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Quantitative functional renormalization group description of the two-dimensional Hubbard model
Cornelia Hille,Fabian B. Kugler,Christian Eckhardt,Christian Eckhardt,Yuan-Yao He,Anna Kauch,Carsten Honerkamp,Alessandro Toschi,Sabine Andergassen +8 more
TL;DR: In this paper, a multiloop extension of the functional renormalization group (fRG) flow equations for the self-energy and two-particle vertex allows for a precise match with the parquet approximation also for two-dimensional lattice problems.
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Truncated unity parquet solver
TL;DR: The truncated unity parquet solver (TUPS) as mentioned in this paper solves the parquet equations using a truncated form-factor basis for the fermionic momenta.
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The victory project v1.0: An efficient parquet equations solver
TL;DR: The program structure and the controlled approximations to efficiently solve the parquet equations, i.e. the two-level kernel approximation and the high-frequency regulation are explained.