Finite size effect on dissociation and diffusion of chiral partners in Nambu-Jona-Lasinio model  

作　　者：Paramita Deb Sabyasachi Ghosh Jai Prakash Santosh Kumar Das Raghava Varma 

机构地区：[1]Department of Physics,Indian Institute of Technology Bombay,Powai,Mumbai-400076,India [2]Indian Institute of Technology Bhilai,GEC Campus,Sejbahar,Raipur-492015,Chhattisgarh,India [3]School of Physical Sciences,Indian Institute of Technology Goa,Ponda-403401,Goa,India

出　　处：《Chinese Physics C》2022年第4期114-122,共9页中国物理C（英文版）

基　　金：Women Scientist Scheme A(WOS-A)of the Department of Science and Technology(DST)funding with(SR/WOS-A/PM-10/2019)。

摘　　要：The masses of pion and sigma meson modes,along with their dissociation in the quark medium,provide detailed spectral structures of the chiral partners.Collectivity has been observed in pA and pp systems both at LHC and RHIC.In this research,we studied the restoration of chiral symmetry by investigating the finite size effect on the detailed structure of chiral partners in the framework of the Nambu-Jona-Lasinio model.Their diffusion and conduction have been studied using this dissociation mechanism.It is determined that the masses,widths,diffusion coefficients,and conductivities of chiral partners merge at different temperatures in the restoration phase of chiral symmetry.However,merging points are shifted to lower temperatures when finite size effect is introduced into the picture.The strengths of diffusions and conductions are also reduced once the finite size is introduced in the calculations.

关 键 词：heavy-ion collisions quark gluon plasma effective QCD 

分 类 号：O571.6[理学—粒子物理与原子核物理] O572.33[理学—物理]