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New Evidence of Earthquake Precursory Phenomena in the 17 Jan. 1995 Kobe Earthquake, Japan
A. Johansen, H. Saleur, D. Sornette
Significant advances, both in the theoretical understanding of rupture processes in heterogeneous media and in the methodology for characterizing critical behavior, allows us to re…
Download relaxation dynamics on the WWW following newspaper publication of URL
Anders Johansen, Didier Sornette
A few key properties of the World-Wide-Web (WWW) has been established indicating the lack of any characteristic scales for the WWW, both in its topology and in its dynamics. Here,…
Log-periodic power law bubbles in Latin-American and Asian markets and correlated anti-bubbles in Western stock markets: An empirical study
Anders Johansen, Didier Sornette
Twenty-two significant bubbles followed by large crashes or by severe corrections in the Argentinian, Brazilian, Chilean, Mexican, Peruvian, Venezuelan, Hong-Kong, Indonesian, Kore…
Predicting Financial Crashes Using Discrete Scale Invariance
Anders Johansen, Didier Sornette, Olivier Ledoit
We present a synthesis of all the available empirical evidence in the light of recent theoretical developments for the existence of characteristic log-periodic signatures of growin…
Punctuated vortex coalescence and discrete scale invariance in two-dimensional turbulence
Anders Johansen, Didier Sornette, Adam Espe Hansen
We present experimental evidence and theoretical arguments showing that the time-evolution of freely decaying 2-d turbulence is governed by a {\it discrete} time scale invariance r…
Critical Crashes
Anders Johansen, Didier Sornette
We argue that the word ``critical'' in the title is not purely literary. Based on our and other previous work on nonlinear complex dynamical systems, we summarize present evidence,…