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Quantum physics is a long established content in high school curricula. More recently, alternative approaches based on information-theoretical formulations of quantum theory have been discussed, in which conceptual emphases change in comparison to established didactical approaches. In particular, the notions of "superposition" and "entanglement" are brought into the center of discussion in these approaches. Likewise, there is a broad public interest in the new applications of quantum physics such as quantum computing, which has led to a variety of popular depictions. In this paper we identify common inaccuracies and errors in these representations, explain the technical background and make first recommendations to avoid misunderstandings. Our initial focus is on the notion of "superposition". -- Die Quantenphysik ist seit vielen Jahren ein etablierter Inhalt der Oberstufenphysik. In j\"ungerer Zeit werden alternative Zug\"ange \"uber die informationstheoretische Formulierung der Quantentheorie diskutiert, bei denen sich konzeptionelle und begriffliche Schwerpunkte im Vergleich zu etablierten Elementarisierungen ver\"andern. Im Besonderen die Begriffe "Superposition" und "Verschr\"ankung" werden bei diesen Zug\"angen in das Zentrum der Diskussion ger\"uckt. Ebenfalls besteht ein breites \"offentliches Interesse an den neuen Anwendungen der Quantenphysik wie dem Quanten-computer, das zu einer Vielzahl popul\"arer Darstellungen gef\"uhrt hat. In dieser Arbeit identifizieren wir verbreitete Ungenauigkeiten und Fehler in diesen Darstellungen, erl\"autern den fachlichen Hintergrund und machen erste Empfehlungen, um Missverst\"andnisse zu vermeiden. Unser Schwerpunkt liegt dabei zun\"achst auf dem Begriff der "Superposition"., Comment: in German language

On April 7, 2001 the Muon g-2 Experiment at Fermilab presented its first results which lead to a 4.2$��$ discrepancy between the world average of the muon anomalous magnetic dipole moment and the standard model prediction of this quantity. I take issue with the statistical meaning of this finding., 3 pages, 1 idea, no figures. In v2 the proper meaning of the p-value has been made more explicit

According to the received view Feynman diagrams are a bookkeeping device in complex perturbative calculations. Thus, they do not provide a representation or model of the underlying physical process. This view is in apparent tension with scientific practice in high energy physics, which analyses its data in terms of `channels'. For example the Higgs discovery was based on the observation of the decay $H \rightarrow ����$ -- a process which can be easily represented by the corresponding Feynman diagrams. I take issue with this tension and show that on closer analysis the story of the Higgs discovery should be told differently., 23 pages, 6 Figures

This note collects, classifies and evaluates common criticism against the de Broglie Bohm theory, including Ockham's razor, asymmetry in the de Broglie Bohm theory, the ``surreal trajectory'' problem, the underdetermination of the de Broglie Bohm theory and the question of relativistic and quantum field theoretical generalizations of the de Broglie Bohm theory. We argue that none of these objections provide a rigorous disproof, they rather highlight that even in science theories can not solely be evaluated based on their empirical confirmation., Comment: 15 pages, 1 figure. Due to many comments significantly improved version, refrences added, main conclusion unaltered

This note reviews the latest measurements of $��_s$ from event shapes in $e^+e^-$ annihilation at LEP1 and LEP2. A critical review of different methods to extract \as is offered., to be published in the proceedings of the DIS03 workshop, St. Petersburg 23.-27.april, 2003 (references added)