CURRICULUM VITAE - Institut für Theoretische Physik
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CURRICULUM VITAE - Institut für Theoretische Physik
CURRICULUM VITAE Dr. Rainer Härtle January 2017 PERSONAL DATA Name Address Telephone E-mail Date of birth Nationality Marital status Rainer Härtle Friedrich-Hund-Platz 1 37077 Göttingen +49-160-7261819 [email protected] September 18th, 1980 German Married 2 Children (24 und 4 months old) SCIENTIFIC CAREER (after PhD) April 2015 – Sep 2017 Principal Investigator (DFG HA 7380/1-1, Eigene Stelle) Fakultät für Physik, Georg-August-Universität Göttingen Sep 2014 – März 2015 Lecturer Short-term Replacement of Prof. A. Honecker Fakultät für Mathematik und Informatik, Georg-August-Universität Göttingen Okt 2013 – Aug 2014 Feodor Lynen Return Fellowship Fakultät für Physik, Georg-August-Universität Göttingen Okt 2012 – Sep 2013 Feodor Lynen Fellowship Department of Physics, Columbia University, New York Mai 2012 – Sep 2012 Scientific Employee Department für Physik, Friedrich-Alexander-Universität Erlangen-Nürnberg PhD April 2007 – April 2012 Scientific Employee Department für Physik, Friedrich-Alexander-Universität Erlangen-Nürnberg Jan 2009, Appointment of supervisor Prof. M. Thoss Chemie-Department, Technische Universität München Master Jan 2007 – March 2007 Scientic Employee Physik-Department, Technische Universität München Undergraduate Assistant 2003 – 2005 Heavy-Ion Accelerator Garching (Projects on Weakly Interacting Massive Particles (WIMPs) and Irradiation Damage of Nuclear Fuel Plates) Neutron Source Heinz Maier-Leibnitz in Garching (FRMII) (Simulation of Heat Transport in Nuclear Fuel Plates) Undergraduate Studies Okt 2001 – Dez 2006 Physics Special Fields: Advanced Theoretical Physics Theoretical particle and nuclear physics Differential geometry Technische Universität München DRAFTEE W10 July 2000 – April 2001 Reconaissance devision Donauwörth HIGH SCHOOL Sep 1991 – June 2000 Theodor Heuss-Gymnasium, Nördlingen SPECIAL QUALIFICATIONS • Referee for the journals Physical Review Letters, Physical Review A, Physical Review B, Nanotechnology, New Journal of Physics, Journal of Physics: Condensed Matter, The Journal of Chemical Physics, Journal of Applied Physics, Phys. Status Solidi B, Physica E, Journal of Physics A and The Journal of Physical Chemistry C • System administrator for a Linux-based network, including several work stations, printers and various servers • Second spokesman of the Deutsche Gesellschaft der Humboldtianer Göttingen-Kassel AWARDS Oct 2012 Ohm-Price for an excellent dissertation Department für Physik, Friedrich-Alexander-Universität Erlangen-Nürnberg 1.200e TEACHING • Supervision of 4 bachelor and 1 master theses (first referee) • Second referee of 1 bachelor thesis • Co-supervision of 3 bachelor and 3 master theses and a short-tem research project (as a PhD student, not as referee) • Lecturer Vorkurs Mathematische Methoden der Physik (≈200 Students) • Teaching assistant for several lectures in physics, including the organization of problem sheets, tutorials and written exams • Tutor positions for several lectures in physics and chemistry THIRD-PARTY FUNDING Positions Juni 2015 funding for two undergraduates Start-up grant of the Georg-August-Universität Göttingen 7.200e Dez 2014 Research Grant Eigene Stelle Deutsche Forschungsgemeinschaft 161.200e Aug 2013 Feodor-Lynen return fellowship Alexander von Humboldt-Stiftung 39.000e Aug 2012 Feodor-Lynen research fellowship Alexander von Humboldt-Stiftung 34.200e Short-Term Scientfic Mission COST - European Cooperation in Science and Technology 1.100e Travel costs Juli 2009 REFERENCES • Prof. A. J. Millis Department of Physics, Columbia University, New York, USA [email protected] (former host) • Prof. M. Thoss (Supervisor of Ph.D.) Theoretical Solid State Physics Department of Physics, Universität Erlangen-Nürnberg, Erlangen, Germany [email protected] • Prof. U. Peskin (Collaboration, Theory) Schulich Faculty of Chemistry and the Lise Meitner Center for Computational Quantum Chemistry Department of Chemistry, Technion - Israel Institute of Technology, Haifa, Israel [email protected] • Prof. H. Weber (Collaboration, Experiment) Applied Physics Department of Physics, Universtität Erlangen-Nürnberg, Erlangen, Germany [email protected] ———————————————————————————————————————— ———————————————————————————————————————— LIST OF PUBLICATIONS Dr. Rainer Härtle January 2017 REGULAR ARTICLES 1) W. Weise and R. Härtle Chiral SU(3) dynamics and antikaon-nuclear quasibound states Nucl. Phys. A 804, 173 (2008), doi:10.1016/j.nuclphysa.2008.01.003, 2) R. Härtle, C. Benesch and M. Thoss Multimode vibrational effects in single-molecule conductance: A nonequilibrium Green’s function approach Phys. Rev. B 77, 205314 (2008), doi:10.1103/PhysRevB.77.205314, 3) R. Härtle, C. Benesch and M. Thoss Vibrational Nonequilibrium Effects in the Conductance of Single Molecules with Multiple Electronic States Phys. Rev. Lett. 102, 146801 (2009), doi:10.1103/PhysRevLett.102.146801, 4) C. Benesch, M. F. Rode, M. Cizek, R. Härtle, O. Rubio-Pons, M. Thoss and A. L. Sobolewski Switching the Conductance of a Single Molecule by Photoinduced Hydrogen Transfer J. Phys. Chem. C 113, 10315 (2009), doi:10.1021/jp901453b 5) R. Härtle, R. Volkovich, M. Thoss and U. Peskin Mode-selective vibrational excitation induced by nonequilibrium transport processes in single-molecule junctions J. Chem. Phys. 133, 081102 (2010), doi:10.1063/1.3474464, Communication 6) R. Härtle and M. Thoss Resonant electron transport in single-molecule junctions: Vibrational excitation, rectification, negative differential resistance, and local cooling Phys. Rev. B 83, 115414 (2011), doi:10.1103/PhysRevB.83.115414, 7) R. Härtle and M. Thoss Vibrational instabilities in resonant electron transport through single-molecule junctions Phys. Rev. B 83, 125419 (2011), doi:10.1103/PhysRevB.83.125419, 8) D. Secker, S. Wagner, S. Ballmann, R. Härtle, M. Thoss and H. B. Weber Resonant Vibrations, Peak Broadening, and Noise in Single Molecule Contacts: The Nature of the First Conductance Peak Phys. Rev. Lett. 106, 136807 (2011), doi:10.1103/PhysRevLett.106.136807, 9) R. Härtle, M. Butzin, O. Rubio-Pons and M. Thoss Quantum Interference and Decoherence in Single-Molecule Junctions: How Vibrations Induce Electrical Current Phys. Rev. Lett. 107, 046802 (2011), doi:10.1103/PhysRevLett.107.046802, 10) R. Volkovich, R. Härtle, M. Thoss and U. Peskin Bias-Controlled Selective Excitation of Vibrational Modes in Molecular Junctions: A Route Towards Mode-Selective Chemistry Phys. Chem. Chem. Phys. 13, 14333 (2011), doi:10.1039/C1CP21161G, 11) H. Wang, I. Pshenichnyuk, R. Härtle, M. Thoss Numerically exact, time-dependent treatment of vibrationally coupled electron transport in single-molecule junctions J. Chem. Phys. 135, 244506 (2011), doi:10.1063/1.3660206, 12) S. Ballmann, R. Härtle, P. B. Coto, M. Mayor, M. Elbing, M. R. Bryce, M. Thoss and H. B. Weber Experimental Evidence for Quantum Interference and Vibrationally Induced Decoherence in Single-Molecule Junctions Phys. Rev. Lett. 109, 056801 (2012), doi:10.1103/PhysRevLett.109.056801, highlighted by J. van Ruitenbeek in a Viewpoint in Physics [23]. 13) R. Härtle, M. Butzin, and M. Thoss Vibrationally Induced Decoherence in Single-Molecule Junctions Phys. Rev. B 87, 085422 (2013), doi:10.1103/PhysRevB.87.085422, 14) S. Ballmann, W. Hieringer, R. Härtle, P. B. Coto, M. R. Bryce, A. Görling, M. Thoss and H. B. Weber The role of vibrations in single-molecule charge transport: A case study of oligoynes with pyridine anchor groups Phys. Status Solidi B 250, 2452 (2013), doi:10.1002/pssb.201350025 15) R. Härtle, U. Peskin, and M. Thoss Vibrationally coupled electron transport in single-molecule junctions: The importance of electron-hole pair creation processes Phys. Status Solidi B 250, 2365 (2013), doi:10.1002/pssb.201349165, 16) R. Härtle, G. Cohen, D. R. Reichman, A. J. Millis Decoherence and lead induced inter-dot coupling in nonequilibrium electron transport through interacting quantum dots: A hierarchical quantum master equation approach Phys. Rev. B 88, 235426 (2013), doi:10.1103/PhysRevB.88.235426, 17) C. Hofmeister, R. Härtle, O. Rubio-Pons, P. B. Coto, A. L. Sobolewski, M. Thoss Switching the Conductance of a Molecular Junction using a Proton Transfer Reaction J. Mol. Model. 20, 2163 (2014), doi:10.1007/s00894-014-2163-2, 18) C. Schinabeck, R. Härtle, H. B. Weber, M. Thoss Current Noise in Single-Molecule Junctions Induced by Electronic-Vibrational Coupling Phys. Rev. B 90, 075409 (2014), doi:10.1103/PhysRevB.90.075409, 19) R. Härtle, A. J. Millis Formation of nonequilibrium steady states in interacting double quantum dots: When coherences dominate the charge distribution Phys. Rev. B 90, 245426 (2014), doi:10.1103/PhysRevB.90.245426, 20) A. Erpenbeck, R. Härtle, M. Thoss Effect of nonadiabatic electronic-vibrational interactions on the transport properties of single-molecule junctions Phys. Rev. B 91, 195418 (2015) doi:10.1103/PhysRevB.91.195418, 21) R. Härtle, M. Kulkarni Effect of broadening in the weak coupling limit of vibrationally coupled electron transport through molecular junctions and the analogy to quantum dot circuit QED systems Phys. Rev. B 91, 245429 (2015) http://link.aps.org/doi/10.1103/PhysRevB.91.245429, 22) R. Härtle, G. Cohen, D. R. Reichman, A. J. Millis Transport through an Anderson impurity: Current ringing, non-linear magnetization and a direct comparison of continuous-time quantum Monte Carlo and hierarchical quantum master equations Phys. Rev. B 92, 085430 (2015) http://link.aps.org/doi/10.1103/PhysRevB.92.085430, 23) A. Erpenbeck, R. Härtle, M. Bockstedte, M. Thoss Vibrationally dependent electron-electron interactions in resonant electron transport through single-molecule junctions Phys. Rev. B 93, 115421 (2016) http://link.aps.org/doi/10.1103/PhysRevB.93.115421, 24) S. Wenderoth, J. Bätge, R. Härtle Sharp peaks in the conductance of double quantum dot and quantum dot spin-valve systems at high temperatures: A hierarchical quantum master equation approach Phys. Rev. B 94, 121303R (2016) http://link.aps.org/doi/10.1103/PhysRevB.94.121303, Rapid Communication 25) C. Schinabeck, A. Erpenbeck, R. Härtle, M. Thoss Hierarchical Quantum Master Equation Approach to Electronic-Vibrational Coupling in Nonequilibrium Transport through Nanosystems Phys. Rev. B 94, 201407R (2016) http://link.aps.org/doi/10.1103/PhysRevB.94.201407, Rapid Communication, Editors’ Suggestion 26) J. Okamoto, L. Mathey, R. Härtle Hierarchical equations of motion approach to transport through an Anderson impurity coupled to interacting Luttinger liquid leads Phys. Rev. B 94, 235411 (2016) http://link.aps.org/doi/10.1103/PhysRevB.94.235411, MONOGRAPHS 1) O. Rubio Pons, R. Härtle, J. Li and M. Thoss Theoretical Study of Electron Transfer and Electron Transport Processes in Molecular Systems at Metal Substrates pp. 613-626 in ’High Performance Computing in Science and Engineering’ ISBN 978-3-642-13871-3, Springer-Verlag Berlin Heidelberg (2010) doi:10.1007/978-3-642-13872-0 51 2) R. Härtle and M. Thoss Vibronic effects in electron transport through single molecule junctions pp. 155-221 in ’Molecular Electronics: An Experimental and Theoretical Approach’ ISBN 978-981-4613-90-3, Pan Stanford Publishing Singapore (2015)doi:10.4032/9789814613910 TALKS 1) R. Härtle, C. Benesch and M. Thoss Vibrational Effects in Electron Transport through Molecular Junctions Spring meeting of the Deutsche Physikalische Gesellschaft (DPG), Berlin, Germany, March 2008 2) R. Härtle and M. Thoss Nonequilibrium Vibrational Effects in Single-Molecule Junctions Seminar in the group of Prof. U. Peskin / Prof. N. Moiseyev, Haifa, Israel, November 2008 3) R. Härtle and M. Thoss Vibrational Nonequilibrium Effects in Single-Molecule Conductance Spring meeting of the Deutsche Physikalische Gesellschaft (DPG), Dresden, Germany, March 2009 4) R. Härtle and M. Thoss (invited) Vibrational Nonequilibrium Effects in Single-Molecule Conductance Workshop on ’Quantum Transport in Nanoscale Molecular Systems’ at the Telluride Science Research Center (TSRC), Telluride, USA, July 2009 5) R. Härtle, R. Volkovich, U. Peskin and M. Thoss Vibrational Heating and Cooling Mechanisms in Molecular Junctions Annual meeting of the Interdisziplinäres Zentrum für Molekulare Materialien (ICMM), Bad Staffelstein, Germany, May 2010 6) R. Härtle, R. Volkovich, M. Thoss and U. Peskin Vibronic Cooling Mechanisms in Molecular Junctions Spring meeting of the Deutsche Physikalische Gesellschaft (DPG), Regensburg, Germany, March 2010 7) R. Härtle Electron-Hole Pair Creation Processes in Single-Molecule Junctions Seminar in the group of Prof. F. Marquardt, Erlangen, Germany, February 2011 (invited) 8) R. Härtle, M. Butzin, O. Rubio-Pons and M. Thoss How Vibrations Generate Electrical Current: Decoherence in Single-Molecule Junctions Spring meeting of the Deutsche Physikalische Gesellschaft (DPG), Dresden, Germany, March 2011 9) R. Härtle, M. Butzin, O. Rubio-Pons and M. Thoss (invited) Quenching Quantum Interference: How Vibrations Generate Electrical Current in a Single-Molecule Contact Workshop on ’Quantum Transport in Nanoscale Molecular Systems’ at the Telluride Science Research Center (TSRC), Telluride, USA, August 2011 10) R. Härtle (invited) Vibronic Effects in Single-Molecule Junctions: Electron-Hole Pair Creation Processes and Vibrationally Induced Decoherence Seminar in the group of Prof. L. Venkataraman, New York, USA, August 2011 11) R. Härtle The Role of Vibrations in Electron Transport through Single-Molecule Junctions Winter school of the Graduate School Molecular Science (GSMS), Kirchberg, Austria, February 2012 12) S. Ballmann, R. Härtle, P. B. Coto, M. Thoss and H. B. Weber Quantum Interference Effects in Single-Molecule Junctions Spring meeting of the Deutsche Physikalische Gesellschaft (DPG), Berlin, Germany, March 2012 13) R. Härtle, A. Erpenbeck and M. Thoss Vibrationally Dependent Electron-Electron Interactions in Single-Molecule Junctions Spring meeting of the Deutsche Physikalische Gesellschaft (DPG), Berlin, Germany, March 2012 14) R. Härtle Electron Transport through Single-Molecule Junctions: Role of Vibrations Seminar in the group of Prof. N. Lorente (Universidad de Autonoma), Barcelona, Spain, July 2012, & seminar in the group of Prof. S. Wimberger (Universität Heidelberg), Heidelberg, Germany, July 2012 (invited) 15) R. Härtle, M. Butzin, P. B. Coto, S. Ballmann, H. B. Weber and M. Thoss Vibrationally induced decoherence in single-molecule junctions: The role of electron-hole pair creation processes March meeting of the American Physical Society (APS), Baltimore, USA, March 2013 16) R. Härtle Linking strongly correlated materials and quantum transport on the nanoscale Network meeting of the Alexander-von-Humboldt foundation (AvH), Jena, Germany, November 2013 17) R. Härtle (invited) Hierarchical quantum master equations: Methodology and applications to quantum transport Workshop on ’Time-evolution of strongly correlated systems’ (org. by S. Manmana), Göttingen, Germany, February 2014, & seminar in the group of Prof. M. Thoss (FAU Erlangen), Erlangen, Germany, February 2014 18) R. Härtle, G. Cohen, D. R. Reichman, A. J. Millis Hierarchical Equation of Motion Investigation of Decoherence and Relaxation Dynamics in Nonequilibrium Transport through Interacting Quantum Dots Spring meeting of the Deutsche Physikalische Gesellschaft (DPG), Dresden, Germany, March 2014, & March meeting of the American Physical Society (APS), Denver, USA, March 2014 19) R. Härtle (invited) From quantum transport to strongly correlated materials: Hierarchical quantum master equation techniques Seminar in the group of Prof. M. Eckstein (Center for Free-Electron Laser Science CFEL), Hamburg, Germany, May 2014, & seminar in the group of Prof. F. Anders (TU Dortmund), Dortmund, Germany, May 2014 & seminar in the group of Prof. R. Noack (Uni Marburg), Marburg, Germany, August 2014 20) R. Härtle, G. Cohen, D. R. Reichman, A. J. Millis Nonequilibrium transport through Anderson impurities: A comparative study based on continuous-time quantum Monte Carlo simulations and hierarchical quantum master equations Spring meeting of the Deutsche Physikalische Gesellschaft (DPG), Berlin, Germany, March 2015 21) R. Härtle Hierarchical quantum master equations and driven long-term impurity dynamics International conference ”The new generation in strongly correlated electron systems” (NGSCES), Trogir, Croatia, September 2015 Korrelationstage 2015, Dresden, September 2015 Mini-Workshop on ”Nonequilibrium physics and quantum Monte Carlo methods”, Toulouse, October 2015 (invited) Seminar of the institute for theoretical solid state physics, Aachen, December 2015 (invited) 22) M. Kulkarni, R. Härtle Effect of broadening in the weak coupling limit of vibrationally coupled electron transport through molecular junctions and the analogy to quantum dot circuit QED systems March meeting of the American Physical Society (APS), Baltimore, USA, March 2016 23) S. Wenderoth, J. Bätge, R. Härtle Sharp conductance peaks in electron transport through quantum dot structures at temperatures T TKondo Spring meeting of the Deutsche Physikalische Gesellschaft (DPG), Regensburg, Germany, März 2016 24) R. Härtle Electron transport through molecules and strongly correlated materials: Impurity problems away from equilibrium Seminar for the collaborative research center 1073 ”Atomic scale control of energy conversion”, Göttingen, Germany, May 2016 25) R. Härtle, Impurity problems away from equilibrium: A hierarchical quantum master equation approach Internationale Konferenz ”New Generations Strongly Correlated Electron Systems (NGSCES)”, Trieste, Italy, September 2016 26) R. Härtle, Transport through molecules, quantum dots and strongly correlated materials: Numerically exact results obtained by hierarchical quantum master equations Seminar of the Nanoscale Science Deptartment, Max-Planck Institute for Solid State Research, Stuttgart, Germany, November 2016 (invited) POSTERS 1) R. Härtle, M. Thoss and W. Domcke Vibrational Effects in Resonant Electron Transport through Molecular Junctions Midterm Meeting of the Schwerpunktprogramm der deutschen Forschungsgemeinschaft (DFG) Quantrans (SPP 1243), Bremen, Germany, July 2007 2) R. Härtle, M. Thoss and W. Domcke Vibrational Nonequilibrium Effects in Single-Molecule Conductance Workshop of the Computer Center Munich (LRZ) for users of the Linux-Cluster, Munich, Germany, Dezember 2008 3) R. Härtle and M. Thoss Vibrational Nonequilibrium Effects in Single-Molecule Conductance Workshop on ’Quantum Transport on the Molecular Scale’ of the Centre Européen de Calcul Atomique et Moléculaire (CECAM), Bremen, Germany, September 2009 4) O. Rubio-Pons, R. Härtle, J. Li and M. Thoss Electron Transfer and Electron Transport in Molecular System at Metal Substrates: A Theoretical Study Workshop of the Computer Center Munich (LRZ) for users of the National Supercomputer HLRB-II, Munich, Germany, Dezember 2009 5) O. Rubio-Pons, R. Härtle and M. Thoss Vibrational and Isomeric Effects in the Conductance of Biphenyl-Acetylene Molecular Junctions Symposium for Theoretical Chemistry (STC), Münster, Germany, September 2010 6) M. Butzin, R. Härtle, O. Rubio-Pons and M. Thoss Quantum Interference and Dephasing Due to Vibronic Coupling in a Single-Molecule Junction Spring meeting of the Deutsche Physikalische Gesellschaft (DPG), Dresden, Germany, March 2011 7) C. Schinabeck, R. Härtle and M. Thoss Large shot noise levels in single-molecule junctions due to electronic-vibrational coupling Spring meeting of the Deutsche Physikalische Gesellschaft (DPG), Berlin, Germany, March 2012 8) R. Härtle, M. Butzin, S. Kurz, O. Rubio-Pons, P. B. Coto, S. Ballmann, H. B. Weber and M. Thoss Vibrationally Induced Decoherence in Single-Molecule Junctions Workshop on ’Quantum Transport in Molecular Nanostructures’ of the Centre Européen de Calcul Atomique et Moléculaire (CECAM), Dublin, Ireland, May 2012 9) C. Schinabeck, R. Härtle and M. Thoss Large shot noise levels in single-molecule junctions induced by electronic-vibrational coupling Workshop on ’Molecular electronics: Quo vadis?’ of the Centre Européen de Calcul Atomique et Moléculaire (CECAM), Bremen, Germany, March 2013 10) A. Erpenbeck, R. Härtle, M. Bockstedte and M. Thoss Model study of vibrationally dependent electron-electron interactions in single-molecule junctions Spring meeting of the Deutsche Physikalische Gesellschaft (DPG), Regensburg, Germany, March 2013 11) R. Härtle Linking strongly correlated materials and quantum transport on the nanoscale Network meeting of the Alexander-von-Humboldt foundation (AvH), Jena, Germany, November 2013 12) C. Schinabeck, R. Härtle, M. Thoss Hierarchical Quantum Master Equation Approach to Vibrationally Coupled Electron Transport in Single-Molecule Junctions Spring meeting of the Deutsche Physikalische Gesellschaft (DPG), Dresden, Germany, March 2014 13) R. Härtle, G. Cohen, D. R. Reichman , A. J. Millis Hierarchical Master Equation Approach to Nonequilibrium Green’s Functions: From Transport through Interacting Quantum Dots to Dynamical Mean Field Theory Spring meeting of the Deutsche Physikalische Gesellschaft (DPG), Dresden, Germany, March 2014 14) R. Härtle, Better solar cells from the cooperation of electrons Annual meeting of the Deutsche Gesellschaft der Humboldtianer, Kassel, Germany, October 2014 15) R. Härtle, How to employ interacting many-particle systems Bayer Workshop ”IT for Life Sciences”, Leverkusen, Germany, December 2014 16) C. Schinabeck, R. Härtle, A. Erpenbeck, M. Thoss Hierarchical Quantum Master Equation Approach to Vibrationally Coupled Electron Transport in Single-Molecule Junctions International Conference on ”Single-Molecule Electronics”, Regensburg, Germany, September 2015 17) S. Wenderoth, J. Bätge, R. Härtle Zero-bias anomalies in electron transport through quantum dots for temperatures way above the Kondo temperature Spring meeting of the Deutsche Physikalische Gesellschaft (DPG), Regensburg, Germany, März 2016 18) J. Bätge, S. Wenderoth, R. Härtle Transient dynamics and magnetization ringing in electron transport through an Anderson impurity: A hierarchical quantum master equation approach Spring meeting of the Deutsche Physikalische Gesellschaft (DPG), Regensburg, Germany, März 2016 19) A. Erpenbeck, C. Schinabeck, R. Härtle, M. Thoss Hierarchical quantum master equation approaches to electronic-vibrational coupling and time-dependent effects in single-molecule junctions International Workshop on ”Classical and Quantum Non-equilibrium Dynamics”, Tel Aviv, Israel, August 2016 20) R. Härtle, Impurity problems away from equilibrium: A hierarchical quantum master equation approach Workshop on ”Quantum many-body methods in condensed matter systems”, Aachen, Germany, October 2016 Winter school on ”Dynamical methods in open quantum systems”, Göttingen, Germany, October 2016