Asymmetric (1+1)-dimensional hydrodynamics in high-energy collisions

作者：Bialas A^*; Peschanski R

来源：Physical Review C, 2011, 83(5): 054905.

DOI：10.1103/PhysRevC.83.054905

The possibility that particle production in high-energy collisions is a result of two asymmetric hydrodynamic flows is investigated using the Khalatnikov form of the (1+1)-dimensional approximation of hydrodynamic equations. The general solution is discussed and applied to the physically appealing "generalized in-out cascade" where the space-time and energy-momentum rapidities are equal at initial temperature but boost invariance is not imposed. It is demonstrated that the two-bump structure of the entropy density, characteristic of the asymmetric input, changes easily into a single broad maximum compatible with data on particle production in symmetric processes. A possible microscopic QCD interpretation of asymmetric hydrodynamics is proposed.

• 出版日期2011-5-12
• 单位中国地震局