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Heavy-ion collisions at ultra-relativistic energies create matter at extreme conditions of energy density and temperature, similar to the ones that existed within a few microseconds after the Big Bang. The fireball produced in the collision goes through a rapid evolution from an early partonic phase of deconfined quark- gluon plasma (QGP) to a hadronic phase and ultimately freezing out after a few tens of fm. The properties of matter created during these collisions and sub-sequent phases are extensively studied in ALICE experiment at Large Hadron Collider (LHC), at Geneva, Switzerland. I will discuss general overview of ALICE experiment and the general physics motivation.
In QGP, how the entropy is produced? What is the nature of the phase transition? How are hadrons made? What are the properties of the medium? How is entropy produced and behaved? Answers to all of the above questions are lie in the theory of correlations & fluctuations. By using the tools of correlation and fluctuations studied as a function of (pseudo-)rapidity difference, (∆η) ∆y, and azimuthal angle difference, ∆φ, enable the study of the production and transport of conserved quantum numbers (including charge, strangeness, and baryon number) in relativistic collisions. I will present the recent results on correlations and fluctuations from ALICE and future prospects based on my research contributions. |