Title : The Particle Horizon - Complexity and Elementarity in the Quantum Universe - Gilles Cohen-Tannoudji, Jean Pierre Baton - book

Summary :

What can we know about matter today? To answer this question, quantum physics seeks to determine the smallest constituent element of reality. What it discovers is no longer an object but a relationship, a relation. The most elementary particles cannot, in fact, be observed without interacting with the instruments that observe them. Observation itself irremediably modifies the particles. The ultimate constituents of matter are no longer material points, but an interaction. They belong to the highest energies and refer to the times of the primordial universe, when matter was an undifferentiated energy. The infinitely small therefore opens onto the infinitely complex and provides the keys to the universe - the infinitely large. Quantum physics finds these three infinities in the horizon of particles. The apparent horizon, observable one would say, that of experimentation which records the traces left by particles in the detector; the deep horizon, where theory postulates in a dizzying way the necessary existence of particles or interactive phenomena that experimentation cannot yet prove, or, on the contrary, seeks to understand the astonishing discoveries of an experiment that precedes it. Thus the key notion of horizon helps to think about the disrupted relationships between the objective and the subjective, the visible and the unobservable, in short, to redefine the concept of the subject of knowledge.

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• EAN: 9782070717439
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• Book in good condition
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