Overview of project B07

Unifying Theoretical Description of Relaxation in Electron Systems

König, Kratzer, Schützhold

The project aims at theoretically understanding the complex many-body dynamics in electronic systems driven by an external stimulus. The coupling strengths to the available relaxation channels govern which relaxation mechanism is the dominating one. This may change from stage to stage of the equilibration process after the stimulus. It may, furthermore, differ from system to system. The aim of this project is to develop a comprehensive picture of these relaxation phenomena by intertwining different theoretical approaches. This will be achieved by collaborative development and application of methods interfacing the sub-disciplines of the PIs.

figure B7

Figure: Energy distribution of hot electrons in a Pb/Si(111) thin film at various time steps (in femtoseconds, fs) after excitation by a laser pulse

Publications

2019

Friedemann Queisser and Ralf Schützhold
Environment-Induced Prerelaxation in the Mott-Hubbard Model
Phys. Rev. B 99, 155110 (2019)
DOI: 10.1103/PhysRevB.99.155110

Johannes Oertel and Ralf Schützhold
WKB Approach to Pair Creation in Spacetime-Dependent Fields: The Case of a Spacetime-Dependent Mass
Phys. Rev. D 99, 125014 (2019)
DOI: 10.1103/PhysRevD.99.125014

Friedemann Queisser, Sebastian Schreiber, Peter Kratzer and Ralf Schützhold
Boltzmann Relaxation Dynamics of Strongly Interacting Spinless Fermions on a Lattice

Leonhard Klar, Nikodem Szpak and Ralf Schützhold
Quantum Simulation of Spontaneous Pair Creation in 2D Optical Lattices

Nikodem Szpak and Ralf Schützhold
Time Reversal and Quantum Loschmidt Echo in Optical Lattices

Matthias Wittemer, Frederick Hakelberg, Philip Kiefer, Jan-Philipp Schröder, Christian Fey, Ralf Schützhold, Ulrich Warring and Tobias Schaetz
Particle Pair Creation by Inflation of Quantum Vacuum Fluctuations in an Ion Trap 

Friedemann Queisser and Ralf Schützhold
Dynamically Assisted Nuclear Fusion

Peter Kratzer and Maedeh Zahedifar
Relaxation of Electronically Confined States in Pb/Si(111) Thin Films from Master Equation with First-Principles-Derived Rates

Sascha Lang and Ralf Schützhold
Analog of Cosmological Particle Creation in Electromagnetic Waveguides
Phys. Rev. D 100, 065003 (2019)
DOI: 10.1103/PhysRevD.100.065003

P. Stegmann, J. König and B. Sothmann
Relaxation Dynamics in Magnetic Double-Domain Systems

E. Kleinherbers, N. Szpak, J. König and R. Schützhold
Relaxation Dynamics in a Hubbard Dimer Coupled to Fermionic Baths: Phenomenological Description and Its Microscopic Foundation
 

2018

Malte F. Linder, Axel Lorke and Ralf Schützhold
Analog Sauter-Schwinger Effect in Semiconductors for Spacetime-Dependent Fields
Phys. Rev. B 97, 035203 (2018)
DOI: 10.1103/PhysRevB.97.035203

Thomas Stegmann and Nikodem Szpak
Current Splitting and Valley Plarization in Elastically Deformed Graphene
2D Materials 6, 015024 (2018)
DOI: 10.1088/2053-1583/aaea8d

Sebastian Gartzke and Andreas Osterloh
Generalized W State of Four Qubits with Exclusively the Three-Tangle
Phys. Rev. A 98, 052307 (2018)
DOI: 10.1103/PhysRevA.98.052307

Christian Fey, Tobias Schaetz and Ralf Schützhold
Ion-trap Analog of Particle Creation in Cosmology
Phys. Rev. A 98, 032704 (2018)
DOI: 10.1103/PhysRevA.98.033407
 

2017

Andreas Osterloh and Ralf Schützhold
Four-Concurrence in the Transverse XY Spin-½ Chain
Phys. Rev. A 96, 012331 (2017)
DOI: 10.1103/PhysRevA.96.012331

Jens Sonntag, Annika Kurzmann, Martin Paul Geller, Friedemann Queisser, Axel Lorke and Ralf Schützhold
Giant Magneto-Photoelectric Effect in Suspended Graphene
New J. Phys. 19, 063028 (2017)
DOI: 10.1088/1367-2630/aa739d

Konstantin Krutitsky, Andreas Osterloh and Ralf Schützhold
Avalanche of Entanglement and Correlations at Quantum Phase Transitions
Sci. Rep. 7, 3634 (2017)
DOI: 10.1038/s41598-017-03402-8