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New Physics Study Findings Reported from Humboldt University (Pattern formation in systems with multiple delayed feedbacks)

August 5, 2014

By a News Reporter-Staff News Editor at Physics Week -- Research findings on Physics are discussed in a new report. According to news reporting from Berlin, Germany, by VerticalNews journalists, research stated, "Dynamical systems with complex delayed interactions arise commonly when propagation times are significant, yielding complicated oscillatory instabilities. In this Letter, we introduce a class of systems with multiple, hierarchically long time delays, and using a suitable space-time representation we uncover features otherwise hidden in their temporal dynamics."

The news correspondents obtained a quote from the research from Humboldt University, "The behavior in the case of two delays is shown to 'encode' two-dimensional spiral defects and defects turbulence. A multiple scale analysis sets the equivalence to a complex Ginzburg-Landau equation, and a novel criterium for the attainment of the long-delay regime is introduced."

According to the news reporters, the research concluded: "We also demonstrate this phenomenon for a semiconductor laser with two delayed optical feedbacks."

For more information on this research see: Pattern formation in systems with multiple delayed feedbacks. Physical Review Letters, 2014;112(17):174103. (American Physical Society -; Physical Review Letters -

Our news journalists report that additional information may be obtained by contacting S. Yanchuk, Institute of Mathematics, Humboldt University of Berlin, Unter den Linden 6, 10099 Berlin, Germany.

Keywords for this news article include: Berlin, Europe, Germany, Physics.

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Source: Physics Week

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