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29 March 2020
 
  » arxiv » cond-mat/0304398

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A fractal-like structure for the fractional quantum Hall effect
Wellington da Cruz ;
Date 17 Apr 2003
Journal Chaos, Solitons, and Fractals, 23 (2005) 373-378
Subject Mesoscopic Systems and Quantum Hall Effect | cond-mat.mes-hall
AbstractWe have pursued in the literature a fractal-like structure for the fractional quantum Halll effect-FQHE which consider the Hausdorff dimension associated with the quantum mechanics paths and the spin of the particles or quasiparticles termed fractons. These objects carry rational or irrational values of spin and satisfy a fractal distribution function associated with a fractal von Neumann entropy. We show that our approach offers {it a rationale} for all FQHE data including possible filling factors suggested by some authors. Our formulation is free of any empirical formula and this characteristic appears as a foundational insight for this FQHE-phenomenon. The connection between a geometrical parameter, the Hausdorff dimension $h$, associated with the quantum paths and the spin $s$ of particles, $h=2-2s$, $0 < s < {1/2}$, is a physical analogous to the fractal dimension formula, $Delta(Gamma)=2-H$, of the graph of the functions in the context of the fractal geometry, where $H$ is knwon as Hölder exponent, with $ 0 < H < 1$. We emphasize that our fractal approach to the fractional spin particles gives us a new perspective for charge-flux systems defined in two-dimensional multiply connected space.
Source arXiv, cond-mat/0304398
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