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Theoretical physicists working at a blackboard collaboration pod in the Beecroft building.
Credit: Jack Hobhouse

Prof Ramin Golestanian

Professor of Theoretical Condensed Matter Physics

Sub department

  • Rudolf Peierls Centre for Theoretical Physics

Research groups

  • Condensed Matter Theory
Ramin.Golestanian@physics.ox.ac.uk
Telephone: 01865 273974
Rudolf Peierls Centre for Theoretical Physics, room 60.12
Max Planck Institute for Dynamics and Self-Organization
Oxford Podcast (2014): Living Matter & Theo Phys
Oxford Podcast (2017): The bacterial Viewpoint
  • About
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  • Publications

A topological fluctuation theorem

Nature Communications Springer Nature 13:1 (2022) 3036

Authors:

Benoît Mahault, Evelyn Tang, Ramin Golestanian
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A topological fluctuation theorem.

Nature communications 13:1 (2022) 3036

Authors:

Benoît Mahault, Evelyn Tang, Ramin Golestanian

Abstract:

Fluctuation theorems specify the non-zero probability to observe negative entropy production, contrary to a naive expectation from the second law of thermodynamics. For closed particle trajectories in a fluid, Stokes theorem can be used to give a geometric characterization of the entropy production. Building on this picture, we formulate a topological fluctuation theorem that depends only by the winding number around each vortex core and is insensitive to other aspects of the force. The probability is robust to local deformations of the particle trajectory, reminiscent of topologically protected modes in various classical and quantum systems. We demonstrate that entropy production is quantized in these strongly fluctuating systems, and it is controlled by a topological invariant. We demonstrate that the theorem holds even when the probability distributions are non-Gaussian functions of the generated heat.
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Steering self-organisation through confinement

(2022)

Authors:

Nuno AM Araújo, Liesbeth MC Janssen, Thomas Barois, Guido Boffetta, Itai Cohen, Alessandro Corbetta, Olivier Dauchot, Marjolein Dijkstra, William M Durham, Audrey Dussutour, Simon Garnier, Hanneke Gelderblom, Ramin Golestanian, Lucio Isa, Gijsje H Koenderink, Hartmut Löwen, Ralf Metzler, Marco Polin, C Patrick Royall, Anđela Šarić, Anupam Sengupta, Cécile Sykes, Vito Trianni, Idan Tuval, Nicolas Vogel, Julia M Yeomans, Iker Zuriguel, Alvaro Marin, Giorgio Volpe
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Emergent conformational properties of end-tailored transversely propelling polymers

Soft Matter Royal Society of Chemistry (RSC) 18:15 (2022) 2928-2935

Authors:

KR Prathyusha, Falko Ziebert, Ramin Golestanian
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Optimal navigation of microswimmers in complex and noisy environments

(2022)

Authors:

Lorenzo Piro, Benoît Mahault, Ramin Golestanian
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