DEVELOPPEMENT MATHEMATIQUE ET APPLICATIONS DE LA GRAVITATION QUANTIQUE A BOUCLES. Thesis (PDF Available) · January. Des chercheurs de l’Institut Périmètre travaillent activement sur un certain nombre d’approches de ce problème, dont la gravitation quantique à boucles, les . 19 avr. A quantum theory of gravitation aims at describing the gravitational La gravité quantique à boucles étant toujours une théorie en cours de.
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Have you forgotten your login? Entanglement and Decoherence in Loop Quantum Gravity.
Loop quantum gravity – Wikipedia
Alexandre Feller 1 Details. Alexandre Feller 1 AuthorId: A quantum theory of gravitation aims at describing the gravitational interaction at every scales of energy and distance.
However, understanding the emergence of our classical spacetime is still an open issue in many proposals. This thesis analyzes this problem in loop quantum gravity with tools borrowed from quantum information theory. This is done in several steps.
Since loop quantum uqantique is still under construction, a pragmatic point of view is advocated and an ansazt for physical states of the gravitational field is studied at first, motivated from condensed matter physics and simple intuitions.
TEL – Thèses en ligne – Entanglement and Decoherence in Loop Quantum Gravity
We analyze the proposal of reconstructing geometry from correlations. Lessons on the quantum dynamics and the Hamiltonian constraint are extracted.
The second aspect of this work focuses on the physics of sub-systems and especially the physics of their boundary. We begin by calculating the entanglement entropy between the interior and the exterior of the region, recovering the holographic law known from classical black hole physics.
Then different boundary dynamics are studied, both in the isolated and open cases, which shed lights again on the fundamental dynamics. Finally, the last aspect of this research studies the dynamics of the boundary interacting with an environment whose degrees of freedom gravitational or matter forming the rest of quantiqu Universe and especially the decoherence it induces.
This allows to discuss the quantum to classical transition and understand, in a given model, the pointer states of geometry. Quantum gravity Quantum information Entanglement Decoherence.
Gravitation quantique Information quantique Intrication. Tuesday, November 28, – Thursday, April 19, – 2: Version validated by the jury STAR.