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arXiv · 1702.01368

Hydrodynamic fluctuations near a critical endpoint and Hanbury Brown-Twiss interferometry

Christopher Plumberg·Joseph I. Kapusta
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Abstract

The field of high energy nuclear collisions has witnessed a surge of interest in the role played by hydrodynamic fluctuations. Hydrodynamic fluctuations may have significant effects on matter created in heavy-ion accelerators whose trajectories in the plane of temperature versus chemical potential pass near a possible critical endpoint. We extend previous studies to explore the impact of these fluctuations on Hanbury Brown-Twiss interferometry of identical hadrons. With an appropriately defined correlation function we find that the fluctuations increase substantially when the trajectory passes near a critical endpoint, and also displays a damped oscillatory behavior in the rapidity distance $Δy$ unlike that originating from initial-state fluctuations.

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Christopher Plumberg, Joseph I. Kapusta. 2017-02-05. Hydrodynamic fluctuations near a critical endpoint and Hanbury Brown-Twiss interferometry. https://doi.org/10.1103/physrevc.95.044910

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