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Physical Review Letters

Physical Review Letters

Are You Living in a Simulation? Many works of science fiction as well as some forecasts by serious technologists and futurologists predict that enormous amounts of computing power will be available in the future. Let us suppose for a moment that these predictions are correct. One thing that later generations might do with their super-powerful computers is run detailed simulations of their forebears or of people like their forebears. Apart form the interest this thesis may hold for those who are engaged in futuristic speculation, there are also more purely theoretical rewards. The structure of the paper is as follows. A common assumption in the philosophy of mind is that of substrate-independence. Arguments for this thesis have been given in the literature, and although it is not entirely uncontroversial, we shall here take it as a given. The argument we shall present does not, however, depend on any very strong version of functionalism or computationalism. We shall develop this idea into a rigorous argument. Writing .

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New Journal of Physics Within the last two decades, quantum technologies (QT) have made tremendous progress, moving from Nobel Prize award-winning experiments on quantum physics (1997: Chu, Cohen-Tanoudji, Phillips; 2001: Cornell, Ketterle, Wieman; 2005: Hall, Hänsch-, Glauber; 2012: Haroche, Wineland) into a cross-disciplinary field of applied research. Technologies are being developed now that explicitly address individual quantum states and make use of the ‘strange’ quantum properties, such as superposition and entanglement.

J Phys B Simon Hooker et al 2014 J. Phys. B: At. Mol. Opt. Journal of Physics B: Atomic, Molecular and Optical Physics is delighted to announce a forthcoming special issue on compact x-ray sources, to appear in the winter of 2014, and invites you to submit a paper. The potential for high-brilliance x- and gamma-ray sources driven by advanced, compact accelerators has gained increasing attention in recent years. Rapid advances in compact accelerators and in FEL techniques make this an opportune moment to consider the opportunities which could be realized by bringing these two fields together. Thus the time is right to publish a peer-reviewed collection of contributions concerning the state-of-the-art in: advanced and novel acceleration techniques; sophisticated physics at the frontier of FELs; and the underlying and enabling techniques of high brightness electron beam physics.

Acceleration Watch (Understanding Accelerating Change) Symphony of Science Элементы: Популярный сайт о фундаментальной науке. Новости науки. Научные конференции, лекции, олимпиады Курс | Основы фундаментальной физики С какими явлениями мы сталкиваемся на очень маленьких и очень больших масштабах длин? Что составляет предмет фундаментальной физики? Почему ученым интересна именно эта проблема, а не иная? 2. Физик Эмиль Ахмедов о неинерциальных системах отсчета, ковариантности и физическом смысле искривления пространства 3. Астрофизик Сергей Попов о черных дырах в ОТО, излучении Хокинга и происхождении гравитационных волн 4. Физик Дмитрий Казаков о понятии квантового поля, теории перенормировок и диаграммах Фейнмана 5. Физик Эмиль Ахмедов об изучении черных дыр, Карле Шварцшильде и гигантских черных дырах 7. Физик Дмитрий Казаков о рассеянии гравитонов, вкладе других частиц и фундаментальной длине 8. Физик Эмиль Ахмедов о концептуальной особенности, достоинствах, недостатках и перспективах теории струн 9. Физик Эмиль Ахмедов о дискретности пространства, мембранах и недостатках ОТО 10. Физик Эмиль Ахмедов о параметрах квантовой электродинамики, увеличении размерности, сильной и слабой нелинейности