
Calendar of Physics Talks Vienna
Applied NewtonCartan Geometry 
Speaker:  Eric Bergshoeff (Univ. of Groningen, NL) 
Abstract:  I will give an introduction into the nonrelativistic version of Riemannian geometry, which is called NewtonCartan geometry. The corresponding nonrelativistic gravity theory, called NewtonCartan gravity, has received a renewed attention due to
unexpected applications as a new tool to examine the (nonperturbative) properties
of nonrelativistic quantum field theories.
I will explain the basic construction of NewtonCartan gravity plus some of its generalizations thereby putting an emphasis on how these different theories
can be obtained by taking limits or reductions of General Relativity.

Date:  Tue, 21.03.2017 
Time:  14:15 
Duration:  60 min 
Location:  Fakultät für Physik, ErwinSchrödingerHörsaal, Boltzmanngasse 5, 5. Stock 
Contact:  S. Fredenhagen, H. Steinacker 
Optical superresolution microscopy of molecular mechanisms of disease 
Speaker:  Clemens F. Kaminski (Department of Chemical Engineering and Biotechnology, University of Cambridge, UK) 
Abstract:  The selfassembly of proteins into ordered macromolecular units is fundamental to a variety of diseases. For example, in Alzheimer’s Disease (AD) and Parkinson’s Disease (PD), proteins that are usually harmless are found to adopt aberrant shapes; one says they ‘misfold’. In the misfolded state the proteins are prone to aggregate into highly ordered, toxic structures, called protein amyloids and these make up the insoluble deposits found in the brains of patients suffering from these devastating disorders. A key requirement to gain insights into molecular mechanisms of disease and to progress in the search for therapeutic intervention is a capability to image the protein assembly process in situ i.e. in cellular models of disease.
In this talk I will give an overview of research to gain insight on the aggregation state neurotoxic proteins in vitro (1, 2), in cells (3, 4, 5) and in live 
Date:  Tue, 21.03.2017 
Time:  16:00 
Location:  Technische Universität Wien, Institut für Angewandte Physik, E134 yellow tower „B“, 5th floor, Sem.R. DB gelb 05 B (room number DB05L03), 1040 Wien, Wiedner Hauptstraße 810 
Contact:  Univ.Prof. Dr. G. Schütz 
Higher order perturbations of Antide Sitter space and timeperiodic solutions of vacuum Einstein equations 
Speaker:  Andrzej Rostworowski (Cracow) 
Abstract:  Motivated by the problem of stability of Antide Sitter (AdS) spacetime, I will discuss nonlinear gravitational perturbations of maximally symmetric solutions of vacuum Einstein equations in general and the case of AdS in particular. I will present the evidence that, similarly to the selfgravitating scalar field at spherical symmetry,
the negative cosmological constant allows for the existence of globally regular, asymptotically AdS, timeperiodic solutions of vacuum Einstein equations that
bifurcate from linear eigenfrequencies of AdS. Interestingly, preliminary results
ndicate that the number of timeperiodic solutions bifurcating from a given eigenfrequency equals the multiplicity of this eigenfrequency.
The talk will be based on the recent preprint https://arxiv.org/abs/1701.07804

Date:  Thu, 23.03.2017 
Time:  14:00 
Duration:  60 min 
Location:  Arbeitsgruppe Gravitation, Währinger Strasse 17, Raum 218, 2. Stock, 1090 Wien 
Contact:  P.T. Chrusciel 
The 112 years of the photon 
Speaker:  Sándor Varró (Wigner Research Centre ; ELI Attosecond Light Pulse Source Research Institute) 
Abstract:  We review the historical background and variants of the notion of light quanta since Einstein’s “heuristic viewpoint” on the photoelectric effect was published in 1905. The process of stimulated emission will also be discussed, primarily in the context of blackbody radiation, as it appeared first in the works of Planck and Einstein. Historical aspects of negative absorption, laser action and cooperative phenomena will also be included. In general, the conceptual development will be analysed, on the basis of discussing the interaction of extremely lowintensity and extremely largeintensity light with matter, including multiphoton processes. At some points, we shall also attempt to interrelate the physical interpretations of the photon with some lightrelated technological developments. 
Date:  Fri, 24.03.2017 
Time:  15:30 
Location:  Atominstitut, Hörsaal, Stadionallee 2, Wien 2 
Contact:  H. Rauch 
