Special ICMT Seminar: "CMBR Power spectrum and flow fluctuations in relativistic heavy-ion collisions"
(sign-up)Ajit M. Srivastava, Institiute of Physics, Bhubansewar
Institute for Condensed Matter Physics
There is a deep interconnection between the physics of flow anisotropies (e.g. elliptic flow) in relativistic heavy-ion collision experiments (RHICE) and the anisotropies observed in cosmic microwave background radiation (CMBR). This is due to the presence of superhorizon fluctuations in both cases which, for CMBR case, have origin in the inflationary phase of the universe. We discuss the basic physics of this interconnection, and present recent simulation results for the power spectrum of flow fluctuation in heavy-ion collisions which confirm this prediction showing exactly the same features as present in the CMBR power spectrum. We also discuss the effects of any vortices (e.g. from exotic color superconducting phases of QCD), as well as initial strong magnetic fields present in RHICE, on the flow pattern and on the power spectrum. In particular we show that magnetic field can significantly enhance elliptic flow which can possibly accommodate larger $\eta/S$ than the AdS/CFT bound.
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