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Response Theory via Generative Score Modeling
Nordita SU; Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.ORCID iD: 0000-0003-1641-9087
CALTECH, Climate Modeling Alliance, Pasadena, CA USA.
MIT, Cambridge, MA 02139 USA.ORCID iD: 0000-0001-8025-3558
2024 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 133, no 26, article id 267302Article in journal (Refereed) Published
Abstract [en]

We introduce an approach for analyzing the responses of dynamical systems to external perturbations that combines score-based generative modeling with the generalized fluctuation-dissipation theorem. The methodology enables accurate estimation of system responses, including those with non-Gaussian statistics. We numerically validate our approach using time-series data from three different stochastic partial differential equations of increasing complexity: an Ornstein-Uhlenbeck process with spatially correlated noise, a modified stochastic Allen-Cahn equation, and the 2D Navier-Stokes equations. We demonstrate the improved accuracy of the methodology over conventional methods and discuss its potential as a versatile tool for predicting the statistical behavior of complex dynamical systems.

Place, publisher, year, edition, pages
American Physical Society (APS) , 2024. Vol. 133, no 26, article id 267302
National Category
Probability Theory and Statistics
Identifiers
URN: urn:nbn:se:kth:diva-359516DOI: 10.1103/PhysRevLett.133.267302ISI: 001396117200002PubMedID: 39879063Scopus ID: 2-s2.0-85207417112OAI: oai:DiVA.org:kth-359516DiVA, id: diva2:1934648
Note

QC 20250625

Available from: 2025-02-04 Created: 2025-02-04 Last updated: 2025-06-25Bibliographically approved

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