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Possible Enhancements of Collective Flow Anisotropy Induced by Uncertainty Relation for Fluid Element

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arxiv 2208.00452 v1 pith:MLVFSB6P submitted 2022-07-31 nucl-th

Possible Enhancements of Collective Flow Anisotropy Induced by Uncertainty Relation for Fluid Element

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keywords relationanisotropycollectiveelementflowfluiduncertaintyvelocity
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In the stochastic formulation of viscous hydrodynamics, the velocity of a fluid element fluctuates satisfying a similar relation to the quantum-mechanical uncertainty relation. Using a non-relativistic toy model, we show that the presence of such a velocity fluctuation increases the local anisotropy of the momentum distributions of produced hadrons, and thus the collective flow parameters such as $v_2$ is emphasized.

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