Title of article :
Free random Lévy variables and financial probabilities
Author/Authors :
Zdzis aw Burda، نويسنده , , Jerzy Jurkiewicz، نويسنده , , Maciej A. Nowak، نويسنده , , Gabor Papp، نويسنده , , Ismail Zahed، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2001
Abstract :
We suggest that Free Random Variables, represented here by large random matrices with spectral Lévy disorder, may be relevant for several problems related to the modeling of financial systems. In particular, we consider a financial covariance matrix composed of asymmetric and free random Lévy matrices. We derive an algebraic equation for the resolvent and solve it to extract the spectral density. The free eigenvalue spectrum is in remarkable agreement with the one obtained from the covariance matrix of the SP500 financial market.
Journal title :
Physica A Statistical Mechanics and its Applications
Journal title :
Physica A Statistical Mechanics and its Applications