Navigation

Skiplinks

Events

Seminars

Show/Hide empty slots

WiSe 2019/2020

LocationTopic, SpeakerInvited by
2019-11-14 16:00
  W15 0-023

2019-11-21 16:00
  W15 0-023

2019-11-28 16:00
  W15 0-023
Dimensional Reduction and Transient Dynamics in Coupled Heteroclinic Cycles.
Maximilian Voit To Be Announced

The abstract will be posted as soon as we receive it from the speaker. The reason we are doing this is for locking the date. That means no other potential speaker should be invited for this date.

Lukas Halekotte
2019-12-05 16:00
  W15 0-023

2019-12-12 16:00
  W15 0-023

2019-12-19 16:00
  W15 0-023

2020-01-09 16:00
  W15 0-023

2020-01-16 16:00
  W15 0-023

2020-01-23 16:00
  W15 0-023

2020-01-30 16:00
  W15 0-023

Past Events:

2019-10-24 16:00
  W15 0-023
Emergence of extreme and superextreme events in the Lienard system
Leo Kingston (Lodz University of Technology, Polen)
Ulrike Feudel
2019-10-29 16:00
  W15 0-023
Extreme events in a network of heterogeneous Josephson junctions
Arindam Mishra (Jadavpur University Kalkata, India)

We observe rare and recurrent large spiking events in a heterogeneous network of superconducting Josephson junctions (JJ) connected through a resistive load and driven by a radio-frequency (rf) current in addition to a constant bias. The intermittent large spiking events show characteristic features of extreme events (EE) since they are larger than a statistically defined significant height. Under the influence of repulsive interactions and an impact of heterogeneity of damping parameters, the network splits into three sub-groups of junctions, one in incoherent rotational, another incoherent librational motion and a third sub-group originating EE. We are able to scan the whole population of junctions with their distinctive individual dynamical features either in EE mode or non-EE mode in parameter space. EE migrates spatially from one to another sub-group of junctions depending upon the repulsive strength and the damping parameter. For weak repulsive coupling, all the junctions originate frequent large spiking events, in rotational motion when the average inter-spike-interval (ISI) is small, but it increases exponentially with repulsive interaction; it largely deviates from its exponential growth at a breakpoint where EE triggers in a sub-group of junctions. The probability density of inter-event-intervals (IEI) in the subgroup exhibits a Poisson distribution. EE originates via bubbling instability of in-phase synchronization.

Ulrike Feudel
2019-11-07 16:00
  W15 0-023
To be announced
Benedikt Luensmann (Max-Planck-Institute for Physics of Complex Systems)

To be announced

Ulrike Feudel
ICBM-ncWeblh80gmastev/dpr (sija8jgbetkklw.ri5texingerj/@uolslcb.d8rkuse) (Stand: 07.11.2019)