SAVE THE DATE! Tuesday 26 August 2025 at 14:00 hrs ICTP Colloquium on "Topological physics as censor, and as microscope" by Prof. Roderich Moessner

[Infopoint]

Dear All,

You are most cordially invited to the *ICTP Colloquium* on "*Topological 
physics as censor, and as microscope*" by *Prof. Roderich Moessner* from 
the Max Planck Institute for the Physics of Complex Systems in Germany.

The Colloquium will take place on *Tuesday 26 August 2025 in the 
Budinich Lecture Hall at ICTP at 14:00* *hrs CET.*

Biosketch:

Roderich Moessner is director at the Max Planck Institute for the 
Physics of Complex Systems in Dresden. After his DPhil in theoretical 
physics at Oxford University, he was postdoc at Princeton, and held 
faculty appointments at École normale supérieure in Paris and at Oxford 
University.

His research interests are in condensed matter and materials physics, 
especially concerning new and topological forms of order, as well as the 
study of classical and quantum many-body dynamics in and out of 
equilibrium. His theoretical discoveries include classical and quantum 
spin liquids, emergent magnetic monopoles, and non-equilibrium 
spatiotemporal ordering phenomena. He is recipient of the Leibniz Prize 
and of the Europhysics Prize.

Abstract:
Topological condensed matter exhibits properties which can be unusually 
robust to local perturbations. Indeed, this property may make local 
information very hard to access, a phenomenon that may be called 
topological censorship. Here, we present two instances where this 
tension between local and topological physics brings up interesting 
physical phenomena. One is drawn from quantum Hall physics, where we 
show that the local distribution of the topologically quantised current 
flow  is continuously tunable between qualitatively different regimes 
[1]. The other is a topological magnet, in which measurements of the 
global magnetisation dynamics reveal the appearance of a dynamical 
fractal and subdiffusion on the lattice scale in a stochiometric 
material [2].
/[1] B. Doucot, D. Kovrizhin, R. M., PNAS 121 (39) e2410703121 (2024)
[2] J. N. Hallen, S. A. Grigera, D. A. Tennant, C. Castelnovo, R.M. 
Science 378, 1218 (2022)/

Light refreshments will be served after the event.

For info, please check the following link: 
https://indico.ictp.it/event/11094/

Looking forward to your participation.

With best regards,

Director's Office, ICTP
www.ictp.it
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