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Not Even Wrong

Not Even Wrong
I’ve just replaced the old version of my draft “spacetime is right-handed” paper (discussed here) with a new, hopefully improved version. If it is improved, thanks are due to a couple people who sent helpful comments on the older version, sometimes making clear that I wasn’t getting across at all the main idea. To further clarify what I’m claiming, here I’ll try and write out an informal explanation of what I see as the relevant fundamental issues about four-dimensional geometry, which appear even for $\mathbf R^4$, before one starts thinking about manifolds. Spinors, twistors and complex spacetime In complex spacetime $\mathbf C^4$ the story of spinors and twistors is quite simple and straightforward. While spinors are the irreducible objects for understanding complex four-dimensional rotations, twistors are the irreducible objects for understanding complex four-dimensional conformal transformations. Real forms In this case the conjugation acts in a subtle manner. Some philosophy Related:  Quantique

Théorie des Cordes : Ce qu'Einstein ne Savait pas Encore (FR) - Version longue Recent Physics of the Dark Universe Articles Recently published articles from Physics of the Dark Universe. EURECA Conceptual Design Report The EURECA Collaboration Available online 4 April 2014G. Angloher | E. Armengaud | C. The EURECA (European Underground Rare Event Calorimeter Array) project is aimed at searching for dark matter particles using cryogenic bolometers. Cold dark matter halos in Multi-coupled Dark Energy cosmologies: Structural and statistical properties April 2014Marco Baldi The recently proposed Multi-coupled Dark Energy (McDE) scenario – characterised by two distinct cold dark matter (CDM) particle species with opposite couplings to a Dark Energy scalar field – introduces... Virtual gravitational dipoles: The key for the understanding of the Universe? April 2014Dragan Slavkov Hajdukovic Before the end of this decade, three competing experiments (ALPHA, AEGIS and GBAR) will discover if atoms of antihydrogen fall up or down. A way forward for Cosmic Shear: Monte-Carlo Control Loops December 2013Maya Lincoln | Avi Wasser

Physics and Physicists Équation de Dirac Un article de Wikipédia, l'encyclopédie libre. L'équation de Dirac est une équation formulée par Paul Dirac en 1928 dans le cadre de sa mécanique quantique relativiste de l'électron. Il s'agit au départ d'une tentative pour incorporer la relativité restreinte à des modèles quantiques, avec une écriture linéaire entre la masse et l'impulsion. Explication[modifier | modifier le code] Cette équation décrit le comportement de particules élémentaires de spins demi-entiers, comme les électrons. Cette équation prend en compte de manière naturelle la notion de spin introduite peu de temps avant et permit de prédire l'existence des antiparticules. Il est par ailleurs notable que l'opérateur de Dirac, découvert pour des raisons absolument physiques (et théoriques), aura en mathématiques un grand avenir par son usage indispensable dans l'un des plus profonds résultats du siècle, le théorème de l'indice démontré dans les années 1960. Formulation mathématique[modifier | modifier le code] et

Backreaction Preposterous Universe Usually, technical advances in mathematical physics don’t generate a lot of news buzz. But last year a story in Quanta proved to be an exception. It relayed the news of an intriguing new way to think about quantum field theory — a mysterious mathematical object called the Amplituhedron, which gives a novel perspective on how we think about the interactions of quantum fields. This is cutting-edge stuff at the forefront of modern physics, and it’s not an easy subject to grasp. “Halfway between a popular account and a research paper” can still be pretty forbidding for the non-experts, but hopefully this guest blog post will convey some of the techniques used and the reasons why physicists are so excited by these (still very tentative) advances. I would like to thank Sean to give me an opportunity to write about my work on his blog. represented by a single Feynman diagram. As a first step, we need to characterize how the amplitude is invariantly defined in a traditional way.

conférence de Strominger (2012): Black holes: harmonic oscillators of the 21st century I think that my ex-colleague Andy Strominger is not only a top physicist but also a captivating speaker. This talk he gave at Berkeley in March 2012 confirms it. Abstract is here... Click the picture above to try to play the MOV video. You may need to install QuickTime/iTunes if it doesn't work for you. After a minute spent with a different colloquium at the following week (whose title was in Latin), Andy Strominger quickly jumps to his main point. In the early 21st century, black holes seem to play the same universal exploratory role in physics that the quantum harmonic oscillator used to play almost 100 years earlier. It sounds almost like poetry but it's actually true although one needs to appreciate many aspects of black holes that general relativity, its semiclassical quantization, and later string theory discovered to appreciate the depth of the summary above. Andy has a certain time to communicate these insights. Rapid progress came in the 1970s. Questions and answers

The Reference Frame les leçons de la mécanique quantique-formalisme quantique Mioara Mugur-Schächter * Note. Le texte qui suit est le manuscrit d'un article envoyé à la revue Le Débat. L'objectif de ce texte était de communiquer à un public plus large un constat et un but qui ont pu fédérer quelques chercheurs de compétences différentes pour constituer ensemble un Centre pour la Synthèse d'une Épistémologie Formalisée (CeSEF) qui travaille depuis 1994. Sur les frontières de la pensée on peut discerner des formes nouvelles. Chez les mathématiciens s'est établie la notion que les possibilités de principe des actions mathématiques ont des limites (la cohérence formelle d'une assertion mathématique, avec les données explicites qui définissent le système formel où cette assertion est formulée, n'est pas toujours décidable à l'intérieur de ce système, etc.). Les frontières entre le système étudié et le reste, son environnement, s'esquivent. Dès qu'il s'agit du vivant l'artificiel dans la distinction entre cause et but devient frappant. Bref :

RÉSONAANCES Le dilaton for Theorie des Cordes Théorie des Supercordes 02/08/2004 1. Introduction Le but de cette étude est d'expliquer l'historique de l'élaboration de la théorie des cordes.A cette occasion, nous présenterons, bien sûr, le contexte dans lequel cette gestation a eu lieu. Nousserons donc amenés à parler des autres théories physiques fondamentales. Celles-ci serontexpliquées dans les grandes lignes en mettant l'accent sur les aspects intéressants pour la théoriedes cordes.Je n'aborderai pas les aspects expérimentaux, c'est à dire les expériences actuelles ou futures quipourraient confirmer ou infirmer la théorie des cordes ou départager plusieurs de ses variantes. © Alexandre Depire 3/136

viXra log ZEITGEIST THE MOVIE REMASTERED : Peter Joseph <div style="padding:5px; font-size:80%; width:300px; background-color:white; margin-left:auto; margin-right:auto; border:1px dashed gray;"> Internet Archive's<!--'--> in-browser video player requires JavaScript to be enabled. It appears your browser does not have it turned on. Embedding Examples and Help ZeitgeistTheMovieRem Zeitgeist, produced by Peter Joseph, was created as a nonprofit expression to inspire people to start looking at the world from a more critical perspective and to understand that very often things are not what the population at large think they are. Now, it's important to point out that there is a tendency to simply disbelieve things that are counter to our understanding, without the necessary research performed. On October 2nd 2008 the sequel to Zeitgeist will premiere at the 5th Annual Artivists Film Festival in LA. Thank You This movie is part of the collection: Feature Films Producer: Peter JosephAudio/Visual: sound, colorKeywords: ZEITGEIST; THE; MOVIE; REMASTERED

Of Particular Significance

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