The Initial Flow of Classical Gluon Fields in Heavy Ion Collisions

9th International Workshop on High-pT Physics at LHC

Fries, Rainer J.^1 ; Chen, Guangyao^1

Cyclotron Institute, Department of Physics and Astronomy, Texas AandM University, College Station

TX

77843, United States^1

关键词: Analytic solution;    Faraday's laws;    Heavy ion collision;    Hydrodynamic behavior;    Particle spectra;    Transverse field;    Transverse flow;    Yang-Mills equation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/589/1/012007/pdf
DOI  :  10.1088/1742-6596/589/1/012007

来源: IOP

【 摘 要 】

Using analytic solutions of the Yang-Mills equations we calculate the initial flow of energy of the classical gluon field created in collisions of large nuclei at high energies. We find radial and elliptic flow which follows gradients in the initial energy density, similar to a simple hydrodynamic behavior. In addition we find a rapidity-odd transverse flow field which implies the presence of angular momentum and should lead to directed flow in final particle spectra. We trace those energy flow terms to transverse fields from the non-abelian generalization of Gauss' Law and Ampere's and Faraday's Laws.