Alternative Technique for "Complex" Spectra Analysis

Details Alternative Technique for "Complex" Spectra Analysis Alternative Technique for "Complex" Spectra Analysis

2000-01-21

arxiv.org/abs/cond-mat/0001305v2

Physical Review E, 62, 2098, (2000)

Physics

Condensed Matter

Statistical Mechanics

20 pages, No figures, Revised Version (Minor Changes)

Scientific paper

10.1103/PhysRevE.62.2098

. The choice of a suitable random matrix model of a complex system is very sensitive to the nature of its complexity. The statistical spectral analysis of various complex systems requires, therefore, a thorough probing of a wide range of random matrix ensembles which is not an easy task. It is highly desirable, if possible, to identify a common mathematcal structure among all the ensembles and analyze it to gain information about the ensemble- properties. Our successful search in this direction leads to Calogero Hamiltonian, a one-dimensional quantum hamiltonian with inverse-square interaction, as the common base. This is because both, the eigenvalues of the ensembles, and, a general state of Calogero Hamiltonian, evolve in an analogous way for arbitrary initial conditions. The varying nature of the complexity is reflected in the different form of the evolution parameter in each case. A complete investigation of Calogero Hamiltonian can then help us in the spectral analysis of complex systems.

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