3 research outputs found
Transient localization in the kicked Rydberg atom
No full textWe investigate the long-time limit of quantum localization of the kicked Rydberg atom. The kicked Rydberg atom is shown to possess in addition to the quantum localization time tau(L) a second crossover time t(D) where quantum dynamics diverges from classical dynamics towards increased instability. The quantum localization is shown to vanish as either the strength of the kicks at fixed principal quantum number or the quantum number at fixed kick strength increases. The survival probability as a function of frequency in the transient localization regime tau(L)< t < t(D) is characterized by highly irregular, fractal-like fluctuations
Cytoskeletal Networks at Interfaces
No full textCytoskeletal networks play a key role in multiple mechanical and dynamical processes in
cells. Recently, a continuum theory has been developed [1],
allowing for the prediction of the material properties of highly crosslinked
cytoskeletal networks on a cellular scale from a phenomenological modelling of the
interactions between the cytoskeleton filaments at a molecular level. We extend this
theoretical framework to account for external forces, allowing us to explore how the
properties of cytoskeletal networks are affected by the presence of various interfaces.
This extended theory allows to study the interplay between cytoskeletal networks and the
organelles that it interacts with, such as the centrosomes in spindles, vesicles embedded
in intracellular actin networks, or even cortex-membrane interactions at the cell periphery.
[1] S. Fürthauer, D. J. Needleman, M. J. Shelley, NJP 23, 013012 (2021).
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Report of the Second European Zebrafish Principal Investigator Meeting in Karlsruhe, Germany, March 21-24, 2012.
No full textThe second European Zebrafish Principal Investigator (PI) Meeting was held in March, 2012, in Karlsruhe, Germany. It brought together PIs from all over Europe who work with fish models such as zebrafish and medaka to discuss their latest results, as well as to resolve strategic issues faced by this research community. Scientific discussion ranged from the development of new technologies for working with fish models to progress in various fields of research such as injury and repair, disease models, and cell polarity and dynamics. This meeting also marked the establishment of the European Zebrafish Resource Centre (EZRC) at Karlsruhe that in the future will serve as an important focus and community resource for zebrafish- and medaka-based research
