Another approach , the gri6ov - regge theory allows multiple interactions to happen in par - allel . the energy needs to be shared among elementary interactions Nexus模型按自洽性的要求，在能量守恒的条件下计算不同pomeron数目对应的几率，并且使得pomeron是全同的。
2.
Parton 6ascd gti6ov - regge theory , realized in the monte carlo code nexus , provides a consistent approach for hadron - hadron scattering and the initia1 stage of 11ucleus - - nucleus collisioils at ultrarelativistic energies 与其它模型相比， nexus更为自洽地处理了多重散射，即在几率计算和粒子产生中一致地处理了pomeron 。
3.
So cross section and particle production are not calculated consistently . and it is difficult for gri5ov - regge theory to include hard process . the parton 6ased gri6ov - regge theory provide a solution : elementary scatterings happen in parajlel , described phenomenologically as pomeron exchanges 因此，在nexus中pomeron的色弦形成方式就与其它模型很不相同；即使只有一个pomeron交换，色弦的端点也是海夸克和反夸克，而不是价夸克。
