Search Results - "Schlünzen, Niclas"

Hubbard nanoclusters far from equilibrium by Hermanns, Sebastian, Schlünzen, Niclas, Bonitz, Michael

“…The Hubbard model is a prototype for strongly correlated many-particle systems, including electrons in condensed matter and molecules, as well as for fermions…”
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Achieving the Scaling Limit for Nonequilibrium Green Functions Simulations by Schlünzen, Niclas, Joost, Jan-Philip, Bonitz, Michael

“…The dynamics of strongly correlated fermions following an external excitation reveals extremely rich collective quantum effects. Examples are fermionic atoms…”
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Doublon Formation by Ions Impacting a Strongly Correlated Finite Lattice System by Balzer, Karsten, Rasmussen, Maximilian Rodriguez, Schlünzen, Niclas, Joost, Jan-Philip, Bonitz, Michael

“…Strongly correlated systems of fermions have a number of exciting collective properties. Among them, the creation of a lattice that is occupied by doublons,…”
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Doublon Production in Correlated Materials by Multiple Ion Impacts by Borkowski, Lotte, Schlünzen, Niclas, Joost, Jan-Philip, Reiser, Franziska, Bonitz, Michael

“…Recently, it was demonstrated that ions impacting a correlated finite graphene‐type honeycomb cluster can excite strong nonequilibrium states. In particular,…”
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Time‐reversal invariance of quantum kinetic equations II: Density operator formalism by Bonitz, Michael, Scharnke, Miriam, Schlünzen, Niclas

“…Time‐reversal symmetry is a fundamental property of many quantum mechanical systems. The relation between statistical physics and time reversal is subtle, and…”
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Femtosecond Electron Dynamics in Graphene Nanoribbons – A Nonequilibrium Green Functions Approach Within an Extended Hubbard Model by Joost, Jan‐Philip, Schlünzen, Niclas, Bonitz, Michael

“…A new approach to study the correlated femtosecond electron dynamics in finite graphene clusters, such as nanoribbons, is presented here. The systems are…”
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Ion-Induced Surface Charge Dynamics in Freestanding Monolayers of Graphene and MoS 2 Probed by the Emission of Electrons by Niggas, Anna, Schwestka, Janine, Balzer, Karsten, Weichselbaum, David, Schlünzen, Niclas, Heller, René, Creutzburg, Sascha, Inani, Heena, Tripathi, Mukesh, Speckmann, Carsten, McEvoy, Niall, Susi, Toma, Kotakoski, Jani, Gan, Ziyang, George, Antony, Turchanin, Andrey, Bonitz, Michael, Aumayr, Friedrich, Wilhelm, Richard A.

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Ion Impact Induced Ultrafast Electron Dynamics in Finite Graphene‐Type Hubbard Clusters by Bonitz, Michael, Balzer, Karsten, Schlünzen, Niclas, Rasmussen, Maximilian Rodriguez, Joost, Jan‐Philip

“…Strongly correlated systems of fermions have an interesting phase diagram arising from the Hubbard gap. Excitation across the gap leads to the formation of…”
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Ion Impact Induced Ultrafast Electron Dynamics in Finite Graphene‐Type Hubbard Clusters (Phys. Status Solidi B 7/2019) by Bonitz, Michael, Balzer, Karsten, Schlünzen, Niclas, Rasmussen, Maximilian Rodriguez, Joost, Jan‐Philip

“…The nonequilibrium Green's functions (NEGF) method has proven to be a powerful tool to describe quantum behavior for a variety of correlated many‐body systems…”
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Ion-Induced Surface Charge Dynamics in Freestanding Monolayers of Graphene and MoS_{2} Probed by the Emission of Electrons by Niggas, Anna, Schwestka, Janine, Balzer, Karsten, Weichselbaum, David, Schlünzen, Niclas, Heller, René, Creutzburg, Sascha, Inani, Heena, Tripathi, Mukesh, Speckmann, Carsten, McEvoy, Niall, Susi, Toma, Kotakoski, Jani, Gan, Ziyang, George, Antony, Turchanin, Andrey, Bonitz, Michael, Aumayr, Friedrich, Wilhelm, Richard A

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Accelerating Nonequilibrium Green functions simulations with embedding selfenergies by Balzer, Karsten, Schlünzen, Niclas, Ohldag, Hannes, Joost, Jan-Philip, Bonitz, Michael

“…Real-time nonequilibrium Green functions (NEGF) have been very successful to simulate the dynamics of correlated many-particle systems far from equilibrium…”
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The dynamically screened ladder approximation: Simultaneous treatment of strong electronic correlations and dynamical screening out of equilibrium by Joost, Jan-Philip, Schlünzen, Niclas, Ohldag, Hannes, Bonitz, Michael, Lackner, Fabian, Březinová, Iva

“…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 $GW$…”
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Doublon production in correlated materials by multiple ion impacts by Borkowski, Lotte, Schlünzen, Niclas, Joost, Jan Philip, Reiser, Franziska, Bonitz, Michael

“…In a recent Letter [Balzer \textit{et al.}, Phys. Rev. Lett. \textbf{121}, 267602 (2018)] it was demonstrated that ions impacting a correlated graphene cluster…”
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Temperature analysis of X-ray Thomson scattering data by Dornheim, Tobias, Böhme, Maximilian, Chapman, Dave, Kraus, Dominik, Preston, Thomas R, Moldabekov, Zhandos, Schlünzen, Niclas, Cangi, Attila, Döppner, Tilo, Vorberger, Jan

“…The accurate interpretation of experiments with matter at extreme densities and pressures is a notoriously difficult challenge. In a recent work [T.~Dornheim…”
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Time Reversal Invariance of quantum kinetic equations: Nonequilibrium Green Functions Formalism by Scharnke, Miriam, Schlünzen, Niclas, Bonitz, Michael

“…Time reversal symmetry is a fundamental property of many quantum mechanical systems. The relation between statistical physics and time reversal is subtle and…”
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Stopping dynamics of ions passing through correlated honeycomb clusters by Balzer, Karsten, Schlünzen, Niclas, Bonitz, Michael

“…Phys. Rev. B 94, 245118 (2016) A combined nonequilibrium Green functions-Ehrenfest dynamics approach is developed that allows for a time-dependent study of the…”
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Hubbard nanoclusters far from equilibrium by Hermanns, Sebastian, Schlünzen, Niclas, Bonitz, Michael

“…Phys. Rev. B 90, 125111 (2014) The Hubbard model is a prototype for strongly correlated many-particle systems, including electrons in condensed matter and…”
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Doublon formation by ions impacting a strongly correlated finite lattice system by Balzer, Karsten, Rasmussen, Maximilian Rodriguez, Schlünzen, Niclas, Joost, Jan-Philip, Bonitz, Michael

“…Phys. Rev. Lett. 121, 267602 (2018) Strongly correlated systems of fermions have a number of exciting collective properties. Among them, the creation of a…”
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