TY - JOUR A1 - Cuevas Rodríguez, Emilio AU - Ortuño Ortín, Miguel AU - Gasparian, Vladimir AU - Pérez Garrido, Antonio T1 - Fluctuations of the correlation dimension at metal-insulator transitions Y1 - 2002 SN - 0031-9007 UR - http://arxiv.org/abs/cond-mat/0106605 UR - http://hdl.handle.net/10317/580 AB - We investigate numerically the inverse participation ratio, P2, of the 3D Anderson model and of the power-law random banded matrix (PRBM) model at criticality. We found that the variance of ln P2 scales with system size L as 2(L) = 2(∞) − AL−D2/2d, being D2 the correlation dimension and d the system dimension. Therefore the concept of a correlation dimension is well defined in the two models considered. The 3D Anderson transition and the PRBM transition for b = 0.3 (see the text for the definition of b) are fairly similar with respect to all critical magnitudes studied. KW - Física Aplicada KW - Modelo de 3D de Andersen KW - Modelo PRBM LA - spa PB - American Physical Society ER -