Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Lackner, Fabian"'
Autor:
Donsa, Stefan, Lackner, Fabian, Burgdörfer, Joachim, Bonitz, Michael, Kloss, Benedikt, Rubio, Angel, Březinová, Iva
Publikováno v:
Phys. Rev. Research 5, 033022 (2023)
We explore the non-equilibrium dynamics of a one-dimensional Fermi-Hubbard system as a sensitive testbed for the capabilities of the time-dependent two-particle reduced density matrix (TD2RDM) theory to accurately describe time-dependent correlated s
Externí odkaz:
http://arxiv.org/abs/2303.04576
Autor:
Joost, Jan-Philip, Schlünzen, Niclas, Ohldag, Hannes, Bonitz, Michael, Lackner, Fabian, Březinová, Iva
Publikováno v:
Phys. Rev. B 105 (16), 165155 (2022)
Dynamical screening is a key property of charged many-particle systems. Its theoretical description is based on the $GW$ approximation that is extensively applied for ground-state and equilibrium situations but also for systems driven out of equilibr
Externí odkaz:
http://arxiv.org/abs/2202.10061
Publikováno v:
Entropy 2022, 24(12), 1740
One key issue of the foundation of statistical mechanics is the emergence of equilibrium ensembles in isolated and closed quantum systems. Recently, it was predicted that in the thermodynamic ($N\rightarrow\infty$) limit of large quantum many-body sy
Externí odkaz:
http://arxiv.org/abs/2103.05974
Publikováno v:
Phys. Rev. A 95, 033414 (2017)
The accurate description of the non-linear response of many-electron systems to strong-laser fields remains a major challenge. Methods that bypass the unfavorable exponential scaling with particle number are required to address larger systems. In thi
Externí odkaz:
http://arxiv.org/abs/1611.00888
Autor:
Sato, Takeshi, Ishikawa, Kenichi L., Brezinova, Iva, Lackner, Fabian, Nagele, Stefan, Burgdorfer, Joachim
Publikováno v:
Phys. Rev. A 94, 023405 (2016)
We present the numerical implementation of the time-dependent complete-active-space self-consistent-field (TD-CASSCF) method [Phys. Rev. A, 88, 023402 (2013)] for atoms driven by a strong linearly polarized laser pulse. The present implementation tre
Externí odkaz:
http://arxiv.org/abs/1605.00703
Publikováno v:
Phys. Rev. A 91, 023412 (2015)
Describing time-dependent many-body systems where correlation effects play an important role remains a major theoretical challenge. In this paper we develop a time-dependent many-body theory that is based on the two-particle reduced density matrix (2
Externí odkaz:
http://arxiv.org/abs/1411.0495
Publikováno v:
Phys. Rev. E 88, 022916 (2013)
We present a semiclassical approximation to the scattering wavefunction $\Psi(\mathbf{r},k)$ for an open quantum billiard which is based on the reconstruction of the Feynman path integral. We demonstrate its remarkable numerical accuracy for the open
Externí odkaz:
http://arxiv.org/abs/1303.3848
Akademický článek
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Akademický článek
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Autor:
Lackner, Fabian
The accurate simulation of time-dependent many-body systems is among the most challenging topics in modern theoretical physics. For many-body systems the number of degrees of freedom is large and conservation laws are rare making the numerical soluti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::102c2c1cb4953cad4553ed61377fbcc5