Maps of the little bangs through energy density and temperature fluctuations

2014/05/15 by S. Basu, Sumit Basu, Rupa Chatterjee +3
Physics and Astronomy · #Computer science #Cosmology and Gravitation Theories #Energy (signal processing) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Physics #hep-ph #nucl-ex #nucl-th

paper · pdf · doi:10.1063/1.4938667

published as AIP Conf.Proc. 1701 (2016) 1, 060004 · 5 pages, 5 figures

arxiv created 2014/05/15 · openalex publication_date 2016/01/01 · arxiv updated 2020/09/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Heavy-ion collisions at ultra-relativistic energies are often referred to as little bangs. We propose for the first time to map the heavy-ion collisions at ultra-relativistic energies, similar to the maps of the cosmic microwave background radiation, using fluctuations of energy density and temperature in small phase space bins. We study the evolution of fluctuations at each stage of the collision using an event-by-event hydrodynamic framework. We demonstrate the feasibility of making fluctuation maps from experimental data and its usefulness in extracting considerable information regarding the early stages of the collision and its evolution.

Citations

• Event-by-event hydrodynamics and elliptic flow from fluctuating initial states
• Transverse momentum fluctuations due to temperature variation in high-energy nuclear collisions
• Pb-Pb collisions atsNN=2.76TeV in a multiphase transport model
• Multiphase transport model for relativistic heavy ion collisions
• Event-by-event fluctuations of average transverse momentum in central Pb+Pb collisions at 158 GeV per nucleon