Quantum many-body framework for passive-scalar turbulence

Abstract:How spatial structures manifest in multi-time correlations is a fundamental question in turbulence. We develop a non-Hermitian bosonic framework that unifies equal-time anomalous statistics and their temporal propagation within a common operator representation. A continuous Wegner flow reorganizes stochastic mode couplings in an extended wave-frequency space. Applied to the Taylor-Kraichnan model, the framework recovers the established equal-time hierarchy and constructs multi-time contributions through propagators acting on successively smaller sets of active fields. This construction separates uniform transport from intrinsic relative dynamics and shows how a higher-order equal-time state evolves under a generator acting only on the fields that remain dynamically active. Within an isotropic radial closure, we derive an explicit fourth-order two-time zero mode scaling function that describe how relative dispersion progressively weakens sensitivity to the initial separation. The framework thus connects spatial intermittency to temporal evolution by identifying how the sequence of observation times determines the propagation of equal-time anomalous structures.

Fluid Dynamics (physics.flu-dyn); Quantum Physics (quant-ph)

arXiv:2609.24284 [physics.flu-dyn]

(or arXiv:2609.24284v1 [physics.flu-dyn] for this version)

https://doi.org/10.48550/arXiv.2609.24284 Focus to learn more arXiv-issued DOI via DataCite (pending registration)

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