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We develop the differential aspects of a noncommutative geometry for the Quantum Hall Effect in the continuous, with the ambition of proving Kubos formula. Taking inspiration from the ideas developed by Bellissard during the 80s we build a Fredholm module for the $C^*$-algebra of continuous magnetic operators, based on a Dirac operator closely related to the quantum harmonic oscillator. An important piece of Bellissards theory (the so-called second Connes formula) is proved. This work provides the continuation of the recent article [DS].
The purpose of this paper is threefold: First of all the topological aspects of the Landau Hamiltonian are reviewed in the light (and with the jargon) of theory of topological insulators. In particular it is shown that the Landau Hamiltonian has a ge
We present a physical interpretation of the doubling of the algebra, which is the basic ingredient of the noncommutative spectral geometry, developed by Connes and collaborators as an approach to unification. We discuss its connection to dissipation
We use coarse index methods to prove that the Landau Hamiltonian on the hyperbolic half-plane, and even on much more general imperfect half-spaces, has no spectral gaps. Thus the edge states of hyperbolic quantum Hall Hamiltonians completely fill up
We introduce a framework in noncommutative geometry consisting of a $*$-algebra $mathcal A$, a bimodule $Omega^1$ endowed with a derivation $mathcal Ato Omega^1$ and with a Hermitian structure $Omega^1otimes bar{Omega}^1to mathcal A$ (a noncommutativ
The Painleve transcendents discovered at the turn of the XX century by pure mathematical reasoning, have later made their surprising appearance -- much in the way of Wigners miracle of appropriateness -- in various problems of theoretical physics. Th