Inhomogeneous space-time structure and two-pion interferometry in NEXSPHERIO model

• Published in: Chinese physics C Vol. 34; no. 4; pp. 472 - 478
• Main Authors: Yan-Yu, Ren, J., Efaaf M, Wei-Ning, Zhang
• Format: Journal Article
• Language: English
• Published: IOP Publishing 01.04.2010; Center of Theoretical N; Department of Physics, Harbin Institute of Technology, Harbin 150006, China%School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024, China%Department of Physics,Harbin Institute of Technology,Harbin 150006,China; School of Physics and Optoelectronic Technology,Dalian University of Technology,Dalian 116024,China
• Subjects: two-pion interferometry; inhomogeneous sources; space-time structure; NEXSPHERIO model
• ISSN: 1674-1137; 2058-6132
• DOI: 10.1088/1674-1137/34/4/010

O4; We examine the space-time structure of particle-emitting source and two-pion interferometry in a smoothed hydrodynamic model with fluctuating initial conditions. An equation of state with a crossover tran-sition between quark-gluon plasma and hadronic gas is adopted in the description of the system evolution. We find that the fluctuating initial conditions lead to inhomogeneons particle-emitting sources. The interferometry results of R_s and Ro indicate that both the source size and the duration of pion emission decrease when the freeze-out temperature increases. The values of R_o/R_s obtained by our simulated two-pion interferometry are consistent with the previous results of smoothed particle hydrodynamics, and smaller than those calculated in usual hydrodynamic models.