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Inhalt des Dokuments

Sarah A. M. Loos

Lupe [1]

Contact

Office:
EW 268
Phone:
+49 30 314 28851
Address:
Sekr. EW 7-1
Institut für Theoretische Physik
Technische Universität Berlin
Hardenbergstr. 36
D-10623 Berlin
Email:
sarahloos [2](a [3])itp.tu-berlin.de
Personal Website:
sarahloos.de [4]

Research interests

We investigate systems that involve noise and time delays. In particular, we consider Brownian particles that are subject to continuous feedback control with a discrete time delay or distributed delay, focusing on:

  • Analytical treatment of stochastic delay differential equations
  • Analytical treatment of the non-Markovian Fokker-Planck equation for systems with memory, which is an infinite hierarchy of coupled equations
  • Stochastic Thermodynamics of delayed systems: Heat flux, entropy production, fluctuation relations
  • Numerical solutions (e.g., via Brownian dynamics simulations)

h-index: 6 [5]

Publications

Publications
10.
S. A. M. Loos and S. H. L. Klapp
Fokker-Planck equations for time-delayed systems via Markovian Embedding
J. Stat. Phys. 177, 95-118 (2019), springer.com [6]
arxiv:1903.02322 [7]
9.
S. A. M. Loos and S. H. L. Klapp
Heat flow due to time-delayed feedback
Scientific Reports 9, 2491 (2019)
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8.
S. A. M. Loos and S. H. L. Klapp
Force-linearization closure for non-Markovian Langevin systems with time delay
Phys. Rev. E 96, 012106 (2017),  arXiv:1705.03526 [9]
7.
R. Gernert, S. A. M. Loos, K. Lichtner, and S. H. L. Klapp
Feedback control of colloidal transport
in Control of Self-Organizing Nonlinear Systems, ed. by Schöll, Klapp, Hövel (Springer, 2016),  www.springer.com/de/book/9783319280271, [10]arXiv:1511.00413v2 [11]
6.
A. Zakharova, S. A. M. Loos, J. Siebert, A. Gjurchinovski, J. C. Claussen, and E. Schöll
Controlling chimera patterns in networks: interplay of structure, noise, and delay in Control of Self-Organizing Nonlinear Systems, ed. by Schöll, S. H. L. Klapp, P. Hövel (Springer, 2016),  www.springer.com/de/book/9783319280271 [12]
5.
S. A. M. Loos, J. C. Claussen, E. Schöll, A. Zakharova
Chimera patterns under the impact of noise
Phys. Rev. E 93, 012209 (2016),  arXiv:1508.04010v2 [13]
4.
I. Schneider, M. Kapeller, S. Loos, A. Zakharova, B. Fiedler, and E. Schöll
Stable and transient multi-cluster oscillation death in nonlocally coupled networks
Phys. Rev. E 92, 052915 (2015), arXiv:1507.01918v1 [14]
3.
S. Loos, A. Zakharova, J. C. Claussen, and E. Schöll
Robustness of chimera states with respect to noise
in Proceedings of the 7th International Conference on Physics and Control, Istanbul (PhysCon 2015), lib.physcon.ru/doc?id=8954cc0077a0 [15]
2.
A. Zakharova, S. Loos, J. Siebert, A. Gjurchinovski, and E. Schöll
Chimera patterns: influence of time delay and noise
IFAC-PapersOnLine 48, 007 (2015), www.sciencedirect.com/science/article/pii/S2405896315022600 [16]
1.
S. A. M. Loos, R. Gernert, and S. H. L. Klapp
Delay-induced transport in a rocking ratchet under feedback control
Phys. Rev. E 89, 052136 (2014),  arXiv:1403.5905 [17]

Talks

2019:

  • ICTP, Trieste, invited by Edgar Roldan, July 2019

  • FU, invited by Roland Netz, July 2019

  • Time-delayed stochastic processes - Fokker-Planck approach, Markovian embedding and thermodynamic notions
    Universitaet Leipzig, im Seminar der Gruppen Kroy und Cichos, invited by Klaus Kroy, May 2019
    http://www.physik.uni-leipzig.de/~auschra/seminar/seminar_newstyle.html [18]

  • Fokker-Planck description of a delayed stochastic process via Markovian embedding
    Symposium of SFB910, May 2019, https://www.itp.tu-berlin.de/ [19]
  • Stochastic thermodynamics of time-delayed systems via Markovian embedding
    EPS - Statistical Physics of Complex Systems, Stockholm, May 2019
    https://agenda.albanova.se/conferenceDisplay.py?confId=6502 [20]
  • Time-delayed feedback – from a thermodynamic perspective
    DPG Fruehjahrstagung der Sektion Kondensierter Materie, Regensburg, March 2019
  • Stochastic systems with time delay – Fokker-Planck approach, Markovian embedding and thermodynamic notions
    in "Oberseminar Dynamics" at TU Muenchen, invited by Christian Kuehn, Munich, Feb 2019
    mathcal.ma.tum.de/mc/showtalks [21]

2018:

  • Fokker-Planck approach to stochastic systems with time delay – challenges and advances
    Universitaet Greifswald, Seminar of the group "Soft Matter Theory", invited by Prof. Ihle, Nov 2018
  • Heat flow induced by time-delayed feedback
    International Conference of SFB910, Rostock-Warnemuende, Sep 2018

  • Stochastic thermodynamics of delayed noisy systems
    FU Berlin, Seminar of Prof. Fiedler, June 2018

  • Towards a (stochastic) thermodynamic description of non-Markovian delayed systems
    DPG Fruehjahrstagung der Sektion Kondensierter Materie, Berlin, March 2018

  • Thermodynamics of stochastic systems under time-delayed feedback control
    Symposium of SFB 910, Berlin, Jan 2018

2017:

  • Approximating the non-Markovian dynamics of classical noisy systems with time-delay
    DPG Fruehjahrstagung der Sektion Kondensierter Materie, Dresden, March 2017

2016:

  • Approximating the non-Markovian dynamics of classical noisy systems with time-delay
    German conference of Women in Physics, Hamburg, Nov

  • Probabilistic treatment of steady states of classical overdamped noisy systems with time-delay
    International Conference on Control of Complex Systems and Networks, Heringsdorf, September

  • Probabilistic treatment of steday states of classical overdamped noisy system with time delay
    FU Berlin, Seminar of AG Fiedler, invited by Isabelle Schneider, June

  • Probabilistic treatment of steady states of classical overdamped noisy systems with time-delay
    Symposium of SFB 910, Berlin, May

  • Chimera patterns under the impact of noise
    DPG Fruehjahrstagung der Sektion Kondensierter Materie, Regensburg, March

Awards

  • EPL poster prize
    https://iopscience.iop.org/journal/0295-5075/page/Awards2019

    [22]
  •  Physik-Studienpreis 2016 der Physikalischen Gesellschaft zu Berlin
     - gefördert durch die Siemens AG -
    http://www.pgzb.tu-berlin.de/index.php?id=29 [23]
  • Stipendium der Studenstiftung des Deutschen Volkes (2013-2015)

  • Auslandsstpendium der Studienstiftung des deutschen Volkes (2013-2014)(6-monatiger Forschungsaufenthalt an der Duke University, North Carolina, USA, bei Joshua Socolar

Final Thesis

Master Thesis:

Noise effects on chimera states in the Stuart-Landau model
TU Berlin, March 2015
Prof. Dr. Eckehard Schöll, PhD

 

Bachelor Thesis:

Dynamik von Kolloiden in periodischen, zeitabhängigen Potentialen
TU Berlin, September 2012
Prof. Dr. Sabine Klapp

 

 

Volunteering and public outreach

  • Speaker at Soapboxscience Event:
    http://soapboxscience.org/soapbox-science-2019-berlin/ [24] June 2019

  • Speaker at Perspektivencafé im Rahmen der TU-Infotage [25] May 2019

  • Speaker at Perspektivencafé im Rahmen der TU-Infotage [26] May 2018





Poster

  • Heat production in a noisy bistable system with time delay, Optical Trapping Summer School, Gothenburg, Mai 2018

  • Steady-state properties of noisy systems with time delay, Thermodynamics and Statistical Mechanics of Small Systems, Rome, September 2017

  • Force-linearization closure for noisy systems with time delay, Liquid Matter Conference, Ljubljana, July 2017

  • Diffusion of colloidal particles under the impact of time-delayed feedback, DPG Fruehjahrstagung der Sektion Kondensierter Materie, Regensburg, March 2016

  • Delay-induced transport in a controlled rocking ratchet, International Conference on Control of Self-Organizing Nonlinear Systems, Warnemuende, August 2014

  • Transport in one-dimensional controlled rocked Ratchet Potentials, DPG Fruehjahrstagung der Sektion Kondensierter Materie, Regensburg, March 2013

 

 

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