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Asymmetric noises on a stock exchange. |
Marzena Kozłowska , Ryszard Kutner |
Warsaw University, Faculty of Physics, Hoża 69, Warszawa 00-681, Poland |
Abstract |
We study the bessa and hossa concerning the recent global financial crash (or peak). By applying our own detrended fluctuation analysis, based on well suited trend in the form of a Mittag-Leffler function superposed with some oscillations [1], we obtained for some stock market indices the asymmetric noises. We even found more global asymmetry as for some indices the asymmetry is connected only with a single side of the peak namely, one side has asymmetric noise but other side not. We plan to study these observations by tools developed, for example, in [2] as well as by using a microscopic approach based on stochastic dynamics of individual agents. [1] M. Kozłowska, A. Kasprzak, R. Kutner, Int. J. Modern Phys. 19 (2008), 453. [2] M. Załuska-Kotur, K. Karpio, A. Orłowski, Acta Phys. Pol. B 37 (2006), 3187. |
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Presentation: Oral at 5 Ogólnopolskie Sympozjum "Fizyka w Ekonomii i Naukach Społecznych", by Marzena KozłowskaSee On-line Journal of 5 Ogólnopolskie Sympozjum "Fizyka w Ekonomii i Naukach Społecznych" Submitted: 2010-10-10 20:44 Revised: 2010-10-10 20:44 |