Self-Organized Criticality
نویسنده
چکیده
The concept of self-organized criticality (SOC) has been evoked by Bak, Tang and Wiesenfeld (BTW) as a possible unifying framework to describe a vast class of dynamically driven systems which evolve spontaneously toward a critical stationary state with no characteristic time or length scale. In this essay we will discuss SOC models that have been studied and to what extent they are related to real physical systems. We will also present recently developed analytical approaches, among them a renormalization group scheme, the Dynamically Driven Renormalization Group.
منابع مشابه
Mapping Self-Organized Criticality onto Criticality
We present a general conceptual framework for self-organized criticality (SOC), based on the recognition that it is nothing but the expression, "unfolded" m a suitable
متن کاملSandpile Models of Self-Organized Criticality
Self-Organized Criticality is the emergence of long-ranged spatio-temporal correlations in nonequilibrium steady states of slowly driven systems without fine tuning of any control parameter. Sandpiles were proposed as prototypical examples of self-organized criticality. However, only some of the laboratory experiments looking for the evidence of criticality in sandpiles have reported a positive...
متن کاملar X iv : a st ro - p h / 03 11 44 5 v 1 1 9 N ov 2 00 3 Multiscale self - organized criticality and powerful X - ray flares
A combination of spectral and moments analysis of the continuous X-ray flux data is used to show consistency of statistical properties of the powerful solar flares with 2D BTW prototype model of self-organized criticality.
متن کامل1/f like noise and self organized criticality
In this paper, the concept of ubiquitous 1/f like noise and the idea of self organized criticality as the explanation are introduced using simple models. Both theoretical and experimental investigations are discussed to further explore the concept of SOC and test its validity. Ubiquity of 1/f like noise
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1998