[AG Guhr] [Uni Duisburg-Essen]

Dr. Sebastian M. Krause

Complex Systems, Econophysics

Office:    MG 331
Phone:    + 49 (0)203 379 4734
E-mail:   
  • Research interests

    • Econophysics
    • Complex networks
    • Complex systems
    • Statistical mechanics
    • Big data
    • Agent based economic models
    • Opinion formation
    • Transportation
    • Computational physics
    • Atomic and molecular physics


  • Research experience and education

    • Current position from April 2016: Postdoc
      AG Prof. Thomas Guhr, University Duisburg-Essen, Germany
    • Postdoc within the EU MULTIPLEX project, April 2014 - March 2016
      Institute Rudjer Boskovic, Zagreb, Croatia
      Local project coordinator: Dr.Sc. Vinko Zlatic
    • Ph.D. student, passed summa cum laude, August 2010 - January 2014
      University of Bremen, Complex Systems Lab, Germany
      Supervisor: Prof. Stefan Bornholdt
    • Research associate for theoretical molecular physics, September 2009 - July 2010
      Technical University and Max-Planck-Institute of Complex Systems (MPI-PKS) Dresden, Germany
    • Diplom in Physics, passed with distinction, October 2003 - September 2009
      Technical University of Dresden, Germany
      Supervisor: Prof. Rüdiger Schmidt


  • Lectures and exercises

    • Leading supervisor for exercises in electrodynamics, tutor, University of Duisburg-Essen, Winter 2018/2019
    • Lecture and project econophysics I and II, University of Duisburg-Essen, Summer 2018
    • Leading supervisor for exercises in classical mechanics, tutor, University of Duisburg-Essen, Winter 2017/2018
    • Lecture and project Econophysics I, tutor, University of Duisburg-Essen, Summer 2017
    • Leading supervisor for exercises in statistical physics and thermodynamics, tutor, University of Duisburg-Essen, Winter 2016/2017
    • Tutor for exercises in advanced classical mechanics, University of Duisburg-Essen, Summer 2016
    • Leading supervisor for exercises in econo- and sociophysics, tutor, University of Bremen, Winter 2012/2013
    • Tutor for exercises in statistical physics and thermodynamics, University of Bremen, Summer 2012
    • Tutor for exercises in quantum mechanics, University of Bremen, Winter 2011/2012
    • Tutor for exercises in electrodynamics, University of Bremen, Summer 2011
    • Leading supervisor for exercises in advanced theoretical physics, tutor, University of Bremen, Winter 2010/2011
    • Tutor for exercises in advanced quantum mechanics, University of Dresden, Summer 2007


  • Supervision of scientific theses

    • Master thesis about business valuation in cooperation with Commerz Real AG, University of Duisburg-Essen, 2018/2019
    • Master thesis about supply chains in cooperation with Infineon Thechnologies, University of Duisburg-Essen, 2017/2018
    • Co-supervision of master thesis about renewable energy production in cooperation with E.ON, University of Duisburg-Essen, 2018
    • Co-supervision of master thesis about stock trading, honored as best master thesis in physics of 2017, University of Duisburg-Essen, 2016/2017
    • Co-supervision of bachelor thesis about stock price movements, University of Duisburg-Essen, 2016
    • Co-supervision of master thesis about opinion formation, University of Bremen, 2013
    • Co-supervision of bachelor thesis about electricity prices, University of Bremen, 2012
    • Co-supervision of bachelor thesis about phase transitions, University of Bremen, 2011


  • Publications

    • Controlling systemic risk - network structures that minimize it and node properties to calculate it
      Sebastian M. Krause, Hrvoje Štefančić, Vinko Zlatić, Guido Caldarelli
      [arXiv]
    • Emergence of stylized facts during the opening of stock markets
      Sebastian M. Krause, Jonas A. Fiegen and Thomas Guhr
      [arXiv]
    • Bond and site color-avoiding percolation in scale free networks
      Andrea Kadović, Sebastian M. Krause, Guido Caldarelli and Vinko Zlatić
      Phys. Rev. E 98 062308 (2018) [arXiv]
    • Impact and recovery process of mini flash crashes: An empirical study
      Tobias Braun, Jonas A. Fiegen, Daniel C. Wagner, Sebastian M. Krause, Thomas Guhr
      PLoS ONE 13 e0196920 (2018) [arXiv, SSRN]
    • The importance of antipersistence for traffic jams
      Sebastian M. Krause, Lars Habel, Thomas Guhr, and Michael Schreckenberg
      EPL 118 38005 (2017) [arXiv] Editor's Choice, Highlight in Europhysics News, Interview im Deutschlandfunk
    • Regularities and Irregularities in Order Flow Data
      Martin Theissen, Sebastian M. Krause, and Thomas Guhr
      EPJ B 90, 218 (2017)
      DOI: 10.1140/epjb/e2017-80087-6 [arXiv, SSRN] Highlights in EPJ B, phys.org and EurekAlert
    • Color-avoiding percolation
      S. M. Krause, M. M. Danziger, and V. Zlatić
      Phys. Rev. E 96 022313 (2017) [arXiv]
    • Hidden Connectivity in Networks with Vulnerable Classes of Nodes
      S. M. Krause, M. M. Danziger, and V. Zlatić
      Phys. Rev. X 6 041022 (2016)
      Open-Access, DOI: 10.1103/PhysRevX.6.041022 [arXiv]
    • Econophysics of adaptive power markets: When a market does not dampen fluctuations but amplifies them
      S. M. Krause, S. Börries, and S. Bornholdt
      Phys. Rev. E 92, 012815 (2015)
      DOI: 10.1103/PhysRevE.92.012815 [arXiv]
      Highlights in Nature, phys.org, Spektrum.de and Deutschlandfunk
    • Spontaneous centralization of control in a network of company ownerships
      S. M. Krause, T. P. Peixoto, and S. Bornholdt
      PLoS ONE 8(12): e80303 (2013)
      DOI: 10.1371/journal.pone.0080303 [arXiv]
    • Spin models as microfoundation of macroscopic financial market models
      S. M. Krause, and S. Bornholdt
      Physica A 392, 4048-4054 (2013)
      DOI: 10.1016/j.physa.2013.04.044 [arXiv]
    • Opinion formation model for markets with a social temperature and fear
      S. M. Krause, and S. Bornholdt
      Phys. Rev. E 86, 056106 (2012)
      DOI: 10.1103/PhysRevE.86.056106 [arXiv]
    • arXiv:
    • Mean-field-like behavior of the generalized voter-model-class kinetic Ising model
      S. M. Krause, Philipp Böttcher, and S. Bornholdt
      Phys. Rev. E 85, 031126 (2012)
      DOI: 10.1103/PhysRevE.85.031126 [arXiv]
    • Complete dynamics of H2+ in strong laser fields
      J. Handt, S. M. Krause, J.-M. Rost, M. Fischer, F. Grossmann, and R. Schmidt
      arXiv:1103.1565 [physics.atm-clus] (2011)
    • Mixed quantum-classical approach to multiphoton dissociation of the hydrogen molecular ion
      M. Fischer, F. Grossmann, R. Schmidt, J. Handt, S. M. Krause, and J.-M. Rost
      New J. Phys. 13, 053019 (2011)
      DOI: 10.1088/1367-2630/13/5/053019
    • Steering a molecule into dissociation via vibrational excitation
      A. Kästner, F. Grossmann, S. M. Krause, R. Schmidt, A. Kenfack, and J.-M. Rost
      New J. Phys. 11, 083014 (2009)
      DOI: 10.1088/1367-2630/11/8/083014


  • Talks

    • Antipersistent Fluctuations of Motorway Traffic Flow Cause Broadly Distributed Congestion Durations
      CCS in Thessaloniki, Greece
      23.-28. September 2018
    • Bypassing Large Groups of Vulnerable Nodes in Complex Networks
      CCS in Thessaloniki, Greece
      23.-28. September 2018
    • Impact and recovery of mini flash crashes
      Econophysics Colloquium 2018 in Palermo, Italy
      12.-14. September 2018
    • Correlated behavior in complex systems
      Talk during a visit of Bath University, UK
      22. March 2018
    • Antipersistence of traffic flow explains congestion durations
      Annual Conference of the German Physical Society in Berlin
      11.-16. March 2018
    • Robust connectivity in networks with groups of vulnerable nodes
      Annual Conference of the German Physical Society in Berlin
      11.-16. March 2018
    • Correlated behavior in complex systems
      Physics colloquium, University of Duisburg-Essen
      31. January 2018
    • Agent based thought experiments: From powerful companies to catastrophic consumer synchronization
      Econophysics Colloquium 2017 in Warsaw, Poland
      5.-7. July 2017
    • Color-avoiding percolation: Bypassing vulnerable classes of nodes in complex networks
      Complenet 2017 in Dubrovnik, Croatia
      20.-24. March 2017
    • Adaptive electricity markets may cause catastrophic consumer synchronization
      Joint seminar of Economics Chairs (Insurance and Risk Management, Finance, Energy Trading and Finance) and Econophysics , University of Duisburg-Essen, Germany
      17.+18. November 2016
    • Utilizing redundant paths in networks with vulnerable classes of nodes
      Theoretical Physics Colloquium, University of Duisburg-Essen, Germany
      15. June 2016
    • Color avoiding Percolation on Networks
      NetSci 2015 in Zaragoza, Spain
      1.-5. June 2015
    • Invited Tutorial Talk: Connecting microscopic behavioral economics to macro-scopic financial market models
      Annual Conference of the German Physical Society in Berlin
      15.-20. March 2015
    • Avoidable Colors Percolation
      ECCS 2014 in Lucca, Italy
      22.-26. September 2014
    • Spontaneous centralization of control in a network of company ownerships
      NetSci (Satellite: State-Topology Coevolution in Adaptive Networks)
      3.-7. June 2013
    • Condensation of wealth and control in a network of firms
      DPG-Frühjahrstagung (Annual Conference of the German Physical Society)
      10.-15. March 2013
    • Financial bubbles from opinion formation with feedbacks
      DPG-Frühjahrstagung (Annual Conference of the German Physical Society)
      25.-30. March 2012
    • Statistical Mechanics of a spin stock market model
      DPG-Frühjahrstagung (Annual Conference of the German Physical Society)
      13.-18. March 2011


  • Posters

    • Extracting the wide variety of trading in stock markets
      Annual Conference of the German Physical Society in Berlin
      11.-16. March 2018
    • Secure message passing on networks with insecure classes of nodes
      DPG-Frühjahrstagung (Annual Conference of the German Physical Society)
      15.-20. March 2015
    • Controllability of power fluctuations with variable pricing schemes
      DPG-Frühjahrstagung (Annual Conference of the German Physical Society)
      10.-15. March 2013
    • Social temperature and fear in an opinion formation model of markets
      DPG-Frühjahrstagung (Annual Conference of the German Physical Society)
      10.-15. March 2013
    • Spin models as microfoundation of macroscopic financial market models
      DPG-Frühjahrstagung (Annual Conference of the German Physical Society)
      25.-30. March 2012


  • Media coverage


  • Highlights

    • The importance of antipersistence for traffic jams, Europhysics Letters 118 38005 (2017) [arXiv], Deutschlandfunk Interview
      Many motorways are running above their capacity and therefore suffer congested traffic. The traffic breakdown from free flow becomes increasingly likely around a critical flow, a critical number of vehicles per minute. Here we discuss congestion durations which are distributed with a power law over three decades, from minutes to hours. The traffic flow shows large fluctuations on short time scales which quickly trend back to the mean value, they are antipersistent. Consequently, it exceeds the critical flow for time spans which are power law distributed. This implies a large number of short-lasting traffic jams with a large risk for rear-end collisions.

    •       

    • Hidden Connectivity in Networks with Vulnerable Classes of Nodes, Phys. Rev. X 6 041022 (2016) [arXiv]
      In many networks, different sets of nodes are vulnerable to different failures or adversaries. To utilize redundant paths for avoiding vulnerable node classes in advance, we developed color avoiding percolation, in colaboration with Michael M. Danziger in the group of Shlomo Havlin and Vinko Zlatic at Rudjer Boscovic institute in Croatia. We found a fast algorithm for the largest cluster of nodes which can communicate avoiding all vulnerable classes, and applied it to the network of internet servers. Further we developed a theory for random network ensembles and compared it to numerical results.
    •       

    • Econophysics of adaptive power markets: When a market does not dampen fluctuations but amplifies them, Phys. Rev. E 92 012815 (2015), discussed in Nature 525 (News and Views) 190-191 (2015)
      Let's assume a hypothetic market situation: Electricity markets with time-dependent consumer prices. Would this help to dampen fluctuations due to renewables? An artificial market, where many consumers perform time-flexible consumption (e.g. washing) due to individual stochastic decisions, shows extreme synchronization of demand at low prices.

    •       

    • Connecting microscopic behavioral economics to macroscopic financial market models, invited tutorial talk at the Annual Conference of the German Physical Society (2015)
      In a talk of 45 minutes, I discussed a way of interconnecting agent based modeling and the field of macroscopic price evolution models. Using the Bornholdt-Kaizoji-Fujiwara market model, I exemplified a general recipe for finding macroscopic models numerically: A macroscopic variable which might control volatility is identified; The stochastic process ruling this volatility variable is measured, using the numeric evolution of the microscopic model. This procedure is suitable for models with puzzling emergent behavior, as well as for complicated models with many parameters.
    • Spontaneous centralization of control in a network of company ownerships, PLoS ONE 8 e80303 (2013) [arXiv]
      To understand the global network of corporate control, we developed an adaptive network model. The results imply that highly centralized control can emerge without it being an explicit goal of the most powerful companies, due to rich-get-richer effects.

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