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Fourcade B., Tremblay A.-M.S. — Universal Multifractal Properties of Circle Maps from the Point of View of Critical Phenomena
Fourcade B., Tremblay A.-M.S. — Universal Multifractal Properties of Circle Maps from the Point of View of Critical Phenomena

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Название: Universal Multifractal Properties of Circle Maps from the Point of View of Critical Phenomena

Авторы: Fourcade B., Tremblay A.-M.S.

Аннотация:

The strange attractor for maps of the circle at criticality has been shown to be characterized by a remarkable infinite set of exponents. This characterization by an infinite set of exponents has become known as the "multifractal" approach. The present paper reformulates the multifractal properties of the strange attractor in a way more akin to critical phenomena. This new approach allows one to study the universal properties of both the critical point and of its vicinity within the same framework, and it allows universal properties to be extracted from experimental data in a straightforward manner. Obtaining Feigenbaum's scaling function from the experimental data is, by contrast, much more difficult. In addition to the infinite set of exponents, universal amplitude ratios here appear naturally. To study the crossover region near criticality, a "correlation
time," which plays a role analogous to the "correlation length" in critical phenomena, is introduced. This new approach is based on the introduction of a joint probability distribution for the positive integer moments of the closest-return distances. This joint probability distribution is physically motivated by the large fluctuations of the multifractal moments with respect to the choice of origin. The joint probability distribution has scaling properties analogous to those of the free energy close to a critical point.


Язык: en

Рубрика: Физика/

Тип: Статья

Статус предметного указателя: Неизвестно

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Год издания: 1990

Количество страниц: 31

Добавлена в каталог: 13.10.2013

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