68 citations · 111 across the 5 of their papers we have counts for
5 papers
Identifying Complexity by Means of Matrices
S. Drozdz, J. Kwapien, J. Speth +1
Complexity is an interdisciplinary concept which, first of all, addresses the question of how order emerges out of randomness. For many reasons matrices provide a very practical an…
Nature of order from random two-body interactions
S. Drozdz, M. Wojcik
We investigate the origin of order in the low-lying spectra of many-body systems with random two-body interactions. Our study based both on analytical as well as on numerical argum…
Imprints of log-periodic self-similarity in the stock market
S. Drozdz, F. Ruf, J. Speth +1
Detailed analysis of the log-periodic structures as precursors of the financial crashes is presented. The study is mainly based on the German Stock Index (DAX) variation over the 1…
Collectivity Embedded in Complex Spectra of Finite Interacting Fermi Systems: Nuclear Example
S. Drozdz, S. Nishizaki, J. Speth +1
The mechanism of collectivity coexisting with chaos in a finite system of strongly interacting fermions is investigated. The complex spectra are represented in the basis of two-par…
Collectivity Embedded in Complex Spectra: Example of Nuclear Double-Charge Exchange Modes
S. Drozdz, S. Nishizaki, J. Speth +1
The mechanism of collectivity coexisting with chaos is investigated on the quantum level. The complex spectra are represented in the basis of two-particle two-hole states describin…