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SUMMARY:Matvey V. Kuzmin\, Hydrodynamics and Energy Correlators
DTSTART:20260529T083000Z
DTEND:20260529T100000Z
DTSTAMP:20260629T072800Z
UID:indico-event-1685072@indico.cern.ch
DESCRIPTION:We study energy-energy correlators (EECs) in many-body quantum
  states\, focusing on the matter produced in the aftermath of heavy-ion co
 llisions. We analyze the angular structure of EECs in the collinear limit 
 and identify a sequence of dynamical regimes. At the largest angular separ
 ations within the small-angle regime\, the observable is dominated by disc
 onnected contributions\, leading to a classical scaling determined by the 
 collective flow of the medium. We explicitly construct this contribution f
 or hadrons produced from a hydrodynamic medium described by boost-invarian
 t Gubser flow\, obtaining the angular dependence of the EEC analytically. 
 We further consider azimuthal perturbations to this flow\, illustrating ho
 w EECs can be used to probe anisotropies in the initial state. At smaller 
 angular separations\, connected contributions become increasingly importan
 t. We argue that in this regime the EEC is controlled by collective hydrod
 ynamic modes. The resulting angular behavior is similar to the one identif
 ied in the EECs of heavy and large-charge states of conformal field theori
 es. At even smaller angles\, this regime is expected to match onto the str
 ucture determined by the light-ray operator product expansion\, before eve
 ntually crossing over to the smallest-angle behavior characteristic of dil
 ute hadronic matter. Altogether\, these results provide a unified picture 
 of the angular structure of EECs in many-body QCD states and suggest new o
 bservables sensitive to the properties of matter in heavy-ion collisions.\
 n[J. Barata\, M. V. Kuzmin\, I. Moult\, A. V. Sadofyev\, and J. M. Silva\,
  https://arxiv.org/abs/2604.21971v1]\n\nhttps://indico.cern.ch/event/16850
 72/\n\nZoom: https://cern.zoom.us/j/67688316575?pwd=ZkM4ZFdCd2krOWJXeVlPK0
 p6T2JEQT09
LOCATION:4/3-004 - TH Discussion Room (CERN)
URL:https://indico.cern.ch/event/1685072/
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