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AG Computersimulationen und Theorie komplexer FluideDr. Sarah A. M. Loos

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Dr. Sarah A. M. Loos

Lupe

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:
(a)itp.tu-berlin.de
Personal Website:
sarahloos.de

Research interests

We analytically and numerically investigate nonequilibrium systems that involve noise and time delays. In particular

  • Analytical treatment of stochastic delay differential equations
  • Fokker-Planck equations for systems with memory
  • Stochastic Thermodynamics of non-Markovian and active systems
  • Delayed feedback control

Publications

Publications
14.
T. Martynec, S.H.L. Klapp, & S.A.M. Loos
Entropy production at criticality in a nonequilibrium Potts model

New Journal of Physics 22, 093069 (2020)
iopscience.iop.org/article/10.1088/1367-2630/abb5f0
13.
S.A.M. Loos & S.H.L. Klapp 
Thermodynamic implications of non-reciprocity

arXiv:2008.00894 (2020)
12.
S.A.M. Loos
Stochastic systems with time delay: 
probabilistic and thermodynamic descriptions of non-Markovian processes far from equilibrium

TU Berlin, DepositOnce (2020)
dx.doi.org/10.14279/depositonce-9846
11.
S.A.M. Loos, S.M. Hermann, & S.H.L. Klapp,
Non-reciprocal hidden degrees of freedom: A unifying perspective on memory, feedback, and activity

arXiv:1910.08372 (2019)

10.
S.A.M. Loos & S.H.L. Klapp,
Fokker-Planck equations for time-delayed systems via Markovian Embedding

J. Stat. Phys. 177, 95-118 (2019),
springer.com  arxiv:1903.02322
9.
S.A.M. Loos & S.H.L. Klapp,
Heat flow due to time-delayed feedback

Scientific Reports 9, 2491 (2019), www.nature.com
8.
S.A.M. Loos & S.H.L. Klapp,
Force-linearization closure for non-Markovian Langevin systems with time delay

Phys. Rev. E 96, 012106 (2017), arXiv:1705.03526
7.
R. Gernert, S.A.M. Loos, K. Lichtner, & 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, arXiv:1511.00413v2
6.
A. Zakharova, S.A.M. Loos, J. Siebert, A. Gjurchinovski, J.C. Claussen, & 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
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
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
3.
S. Loos, A. Zakharova, J. C. Claussen, & E. Schöll,
Robustness of chimera states with respect to noise

Proceedings of the 7th International Conference on Physics and Control, Istanbul (PhysCon 2015),
lib.physcon.ru/doc?id=8954cc0077a0
2.
A. Zakharova, S. Loos, J. Siebert, A. Gjurchinovski, & E. Schöll,
Chimera patterns: influence of time delay and noise

IFAC-PapersOnLine 48, 007 (2015), www.sciencedirect.com/science/article/pii/S2405896315022600
1.
S.A.M. Loos, R. Gernert, & S.H.L. Klapp,
Delay-induced transport in a rocking ratchet under feedback control

Phys. Rev. E 89, 052136 (2014),  arXiv:1403.5905

Awards

  • 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

Talks

2020:

  • CSH Workshop, Wien, June 2020 - postponed to 2021 due to Covid. 

  • DPG Meeting, Dresden, March 2020
     
  • Third Infinity, Goettingen, February 2020

2019:

  • ICTP, Trieste, invited by Édgar Roldán, July 2019

  • FU Berlin, 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

  • Fokker-Planck description of a delayed stochastic process via Markovian embedding
    Symposium of SFB910, May 2019, https://www.itp.tu-berlin.de/
  • 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

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

Final Thesis

PhD Thesis:

Stochastic systems with time delay:
Probabilistic and thermodynamic descriptions of non-Markovian processes far from equilibrium

TU Berlin, March 2020
Prof. Dr. Sabine Klapp, TU Berlin
Prof. Dr. Klaus Kroy, Universität Leipzig

 

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

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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