DMS-EPSRC Sharp Large Deviation Estimates of Fluctuations in Stochastic Hydrodynamic Systems

Lead Research Organisation: University of Warwick
Department Name: Mathematics

Abstract

Extreme events can be highly impactful. They are typically rare, which is fortunate if their consequences are negative on society, but also makes them difficult to predict. The scope of this project is to develop computational tools that can be applied to gain understanding of how extreme events occur in complex stochastic systems. Examples are models for the forecasting of extreme weather-related events like tropical storms and flooding as well as the spread of pollutants in case of ocean oil spills. Our tools will enable researchers to ask questions beyond of what is currently possible. This will lead to transformative improvement of current predictive models, which is essential for efficient management of natural and man made disasters. Further applications include the characterization of extreme events in stochastic models that behave similar to fluids, for example in the context of epidemics, traffic, and star formation.

Publications

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Alqahtani M (2021) Instantons for rare events in heavy-tailed distributions in Journal of Physics A: Mathematical and Theoretical

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Frishman A (2022) Dynamical landscape of transitional pipe flow. in Physical review. E

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Frishman A (2022) Mechanism for turbulence proliferation in subcritical flows in Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences

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Margazoglou G (2021) Dynamical landscape and multistability of a climate model. in Proceedings. Mathematical, physical, and engineering sciences

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Schorlepp T (2022) Spontaneous symmetry breaking for extreme vorticity and strain in the three-dimensional Navier-Stokes equations. in Philosophical transactions. Series A, Mathematical, physical, and engineering sciences

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Schorlepp T (2023) Symmetries and Zero Modes in Sample Path Large Deviations in Journal of Statistical Physics

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Schorlepp T (2021) Gel'fand-Yaglom type equations for calculating fluctuations around instantons in stochastic systems in Journal of Physics A: Mathematical and Theoretical