Zobrazeno 1 - 10
of 182
pro vyhledávání: '"Verdozzi C"'
Autor:
Joost, J. -P., Schlünzen, N., Hese, S., Bonitz, M., Verdozzi, C., Schmitteckert, P., Hopjan, M.
Publikováno v:
Contributions to Plasma Physics 61, e202000220 (2021)
The energy gap of correlated Hubbard clusters is well studied for one-dimensional systems using analytical methods and density-matrix-renormalization-group (DMRG) simulations. Beyond 1D, however, exact results are available only for small systems by
Externí odkaz:
http://arxiv.org/abs/2005.07651
Publikováno v:
Phys. Rev. Research 1, 013017 (2019)
We present a density functional theory (DFT) for lattice models with local electron-electron (e-e) and electron-phonon (e-ph) interactions. Exchange-correlation potentials are derived via dynamical mean field theory for the infinite-dimensional Bethe
Externí odkaz:
http://arxiv.org/abs/1903.04984
Ultrafast manipulations of magnetic phases are eliciting increasing attention from the scientific community, because potentially relevant to the understanding of nonequilibrium phase transitions and to novel technologies. Here, we focus on manipulati
Externí odkaz:
http://arxiv.org/abs/1802.00838
Publikováno v:
Nano Letters (Web): December 21, 2017 (Letter)
We use the Nonequilibrium Green's Function (NEGF) method to perform real-time simulations of the ultrafast electron dynamics of photoexcited donor-C60 complexes modeled by a Pariser-Parr-Pople Hamiltonian. The NEGF results are compared to mean-field
Externí odkaz:
http://arxiv.org/abs/1801.07712
We employ Non-equilibrium Green's functions (NEGF) to describe the real-time dynamics of an adsorbate-surface model system exposed to ultrafast laser pulses. For a finite number of electronic orbitals, the system is solved exactly and within differen
Externí odkaz:
http://arxiv.org/abs/1602.07882
Publikováno v:
Phys. Rev. Lett. 116, 236402 (2016)
We propose a description of nonequilibrium systems via a simple protocol that combines exchange-correlation potentials from density functional theory with self-energies of many-body perturbation theory. The approach, aimed to avoid double counting of
Externí odkaz:
http://arxiv.org/abs/1508.03089
Publikováno v:
Phys. Rev. B 93, 035107 (2016)
Quantum transport of strongly correlated fermions is of central interest in condensed matter physics. Here, we present first-principle nonequilibrium Green functions results using $T$-matrix selfenergies for finite Hubbard clusters of dimension $1,2,
Externí odkaz:
http://arxiv.org/abs/1508.02947
Three-dimensional dynamics of a fermionic Mott wedding-cake in clean and disordered optical lattices
Non-equilibrium quantum phenomena are ubiquitous in nature. Yet, theoretical predictions on the real-time dynamics of many-body quantum systems remain formidably challenging, especially for high dimensions, strong interactions or disordered samples.
Externí odkaz:
http://arxiv.org/abs/1308.4382
We investigate the static and dynamical behavior of 1D interacting fermions in disordered Hubbard chains, contacted to semi-infinite leads. The chains are described via the repulsive Anderson-Hubbard Hamiltonian, using static and time-dependent latti
Externí odkaz:
http://arxiv.org/abs/1204.0672
We study the time-dependent transmission of entanglement entropy through an out-of-equilibrium model interacting device in a quantum transport set-up. The dynamics is performed via the Kadanoff-Baym equations within many-body perturbation theory. The
Externí odkaz:
http://arxiv.org/abs/1103.4054