Dynamical model selection near the quantum-classical boundary

We discuss a general method of model selection from experimentally recorded time-trace data. This method can be used to distinguish between quantum and classical dynamical models. It can be used in post-selection as well as for real-time analysis, and offers an alternative to statistical tests based on state-reconstruction methods. We examine the conditions that optimize quantum hypothesis testing, maximizing one's ability to discriminate between classical and quantum models. We set upper limits on the temperature and lower limits on the measurement efficiencies required to explore these differences, using a novel experiment in levitated optomechanical systems as an example.Comment: 9 pages, 1 figure. Accepted for publication in Physical Review A (Rapid Communication

August Sauer (1855-1926)

Der Prager Germanist August Sauer wirkte nicht nur im engeren akademischen Rahmen an der dortigen Karl-Ferdinand-Universität, sondern auch in kultur- und wissenschaftspolitischer Hinsicht. Sein Einfluss auf die intellektuellen und wissenschaftlichen Diskurse in Böhmen bzw. später der Tschechoslowakei, aber auch auf Habsburg-Österreich insgesamt ist von nicht zu unterschätzender Bedeutung. Der vorliegende Sammelband würdigt August Sauers Werk aus literatur-, kultur- und geschichtswissenschaftlicher Perspektive, bei der der kultur- und wissenschaftspolitische Kontext genauso in den Blick genommen wird wie der engere fachhistorische Rahmen

Zur historischen und bewusstseinsmaessigen Entwicklung der Berufstaetigkeit der Frau

Freie Universitaet Berlin, Zentralinstitut 6 - T2G 117 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman

Dynamical model selection near the quantum-classical boundary

We discuss a general method of model selection from experimentally recorded time-trace data. This method can be used to distinguish between quantum and classical dynamical models. It can be used in postselection as well as for real-time analysis, and offers an alternative to statistical tests based on state-reconstruction methods. We examine the conditions that optimize quantum hypothesis testing, maximizing one's ability to discriminate between classical and quantum models. We set upper limits on the temperature and lower limits on the measurement efficiencies required to explore these differences, using an experiment in levitated optomechanical systems as an example

Anthracene-Containing Conjugated Polymer Showing Four Optical Transitions Upon Doping: A Spectroscopic Study

An anthracene-containing poly(arylene-ethynylene)-alt-poly(arylene-vinylene) (PAE-PAV) of general constitutional unit (PhCCAnthrCCPhCHCHAnthrCHCH)(n) bearing two 2-ethylhexyloxy solubilizing side chains on each phenylene (Ph) unit has been synthesized and characterized. The basic electrochemical characterization was done, showing the existence of two non-reversible oxidation and one reversible reduction peaks. The optical properties, the real and imaginary part of the dielectric function, were probed using spectroscopic ellipsometry (SE). The vibrational structure of the undoped/doped polymer was investigated using Fourier transformed infrared spectroscopy. A strong change in the polaronic absorption was observed during the doping, which after modeling revealed the existence of two separated transitions. The optical changes upon doping were additionally recorded using the SE technique. Similar to the results from FT-IR spectroscopy, two new in-the-gap absorptions were found. Moreover, the electrical conductivity as well as the mobility of positive carriers were measured. In the undoped state, the conductivity of the polymer was found to be below the detection limit (<S cm(-1)), after doping the conductivity increased to 0.69 S cm(-1). (c) 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2014, 52, 338-34

August Sauer (1855-1926)

Der Prager Germanist August Sauer wirkte nicht nur im engeren akademischen Rahmen an der dortigen Karl-Ferdinand-Universität, sondern auch in kultur- und wissenschaftspolitischer Hinsicht. Sein Einfluss auf die intellektuellen und wissenschaftlichen Diskurse in Böhmen bzw. später der Tschechoslowakei, aber auch auf Habsburg-Österreich insgesamt ist von nicht zu unterschätzender Bedeutung. Der vorliegende Sammelband würdigt August Sauers Werk aus literatur-, kultur- und geschichtswissenschaftlicher Perspektive, bei der der kultur- und wissenschaftspolitische Kontext genauso in den Blick genommen wird wie der engere fachhistorische Rahmen