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Delving into Slow-Fast Systems and Hysteresis: A Comprehensive Exploration

Jese Leos
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Published in Extended Abstracts Summer 2024: Slow Fast Systems And Hysteresis: Theory And Applications (Trends In Mathematics 10)
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In the intricate world of dynamical systems, where complex behaviors arise from seemingly simple interactions, we encounter fascinating phenomena that challenge our intuitions. Among these, slow-fast systems and hysteresis stand out as captivating concepts that unveil the subtle dynamics shaping our world.

Slow-Fast Systems: A Tale of Contrasting Timescales

As the name suggests, slow-fast systems are characterized by the presence of variables that evolve at markedly different rates. Consider a mechanical system with a heavy flywheel rotating slowly and a light pendulum oscillating rapidly. The flywheel's slow rotation governs the overall system's behavior, while the pendulum's fast oscillations add a dynamic layer that influences the system's response to external stimuli.

Extended Abstracts Summer 2024: Slow Fast Systems and Hysteresis: Theory and Applications (Trends in Mathematics 10)
Extended Abstracts Summer 2024: Slow-Fast Systems and Hysteresis: Theory and Applications (Trends in Mathematics Book 10)
by Brittany Fichter

5 out of 5

Language : English
File size : 3302 KB
Screen Reader : Supported
Print length : 114 pages

Diagram Of A Slow Fast System With A Heavy Flywheel And A Light Pendulum Extended Abstracts Summer 2024: Slow Fast Systems And Hysteresis: Theory And Applications (Trends In Mathematics 10)

Slow-fast systems often exhibit intriguing behaviors due to the interplay between the slow and fast variables. For instance, the flywheel's inertia can create a delay in the system's response to changes in the input, leading to phenomena such as hysteresis.

Hysteresis: Memory Effects in Dynamical Systems

Hysteresis is a fascinating phenomenon observed in systems that exhibit memory effects. When a system's output depends not only on its current input but also on its past history, hysteresis arises. This memory-like behavior manifests graphically as a loop in the system's output-input plot.

Diagram Of A Hysteresis Loop Extended Abstracts Summer 2024: Slow Fast Systems And Hysteresis: Theory And Applications (Trends In Mathematics 10)

Consider a magnetic material being magnetized by an external magnetic field. As the field strength increases, the material's magnetization increases. However, when the field starts decreasing, the magnetization does not follow the same path but remains higher than it would be for the same field strength during the increasing phase. This behavior arises due to the material's internal structure and its resistance to change.

Hysteresis in Slow-Fast Systems: A Deeper Look

Hysteresis often plays a pivotal role in slow-fast systems. The slow variable acts as a memory element, storing information about the system's past behavior. This stored information then influences the system's response to subsequent inputs, giving rise to hysteresis.

For example, in a climate system with a slow-changing ocean temperature and a fast-changing atmosphere, the ocean temperature acts as a memory variable. Changes in atmospheric conditions can trigger changes in the ocean temperature, which in turn affects the atmospheric dynamics. This intricate interplay creates hysteresis in the system's response to climate forcing.

Applications of Slow-Fast Systems and Hysteresis

Slow-fast systems and hysteresis find wide-ranging applications across various scientific and engineering fields.

- Biology: Hysteresis is observed in biological systems, such as the transition between sleep and wake states, where the brain's slow-changing circadian rhythms influence the rapid oscillations of neural activity.

- Engineering: Slow-fast systems are encountered in control systems, where slow variables represent plant dynamics and fast variables represent feedback loops. Hysteresis is important in devices like thermostats and pressure regulators.

- Climate Science: Slow-fast systems are essential in understanding climate dynamics, with ocean temperatures and ice sheet behavior influencing atmospheric circulation patterns. Hysteresis is observed in climate models, shaping the long-term response of the climate system to external forcing.

Slow-fast systems and hysteresis offer a captivating lens through which to examine complex dynamical systems. The interplay between variables evolving at different timescales gives rise to rich behaviors and memory effects. Understanding these concepts is crucial for unraveling the complexities of a wide range of phenomena across scientific and engineering disciplines.

As we continue to delve deeper into the intricate dance of dynamical systems, the exploration of slow-fast systems and hysteresis will undoubtedly yield further profound insights into the workings of our natural and engineered worlds.

Extended Abstracts Summer 2024: Slow Fast Systems and Hysteresis: Theory and Applications (Trends in Mathematics 10)
Extended Abstracts Summer 2024: Slow-Fast Systems and Hysteresis: Theory and Applications (Trends in Mathematics Book 10)
by Brittany Fichter

5 out of 5

Language : English
File size : 3302 KB
Screen Reader : Supported
Print length : 114 pages
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The book was found!
Extended Abstracts Summer 2024: Slow Fast Systems and Hysteresis: Theory and Applications (Trends in Mathematics 10)
Extended Abstracts Summer 2024: Slow-Fast Systems and Hysteresis: Theory and Applications (Trends in Mathematics Book 10)
by Brittany Fichter

5 out of 5

Language : English
File size : 3302 KB
Screen Reader : Supported
Print length : 114 pages
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