arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1202.0648hep-thhep-phnucl-th
收藏

Gross-Neveu模型中复合态因子化散射的证据

Evidence for factorized scattering of composite states in the Gross-Neveu model

Christian Fitzner, Michael Thies

摘要:

用含时的Dirac-Hartree-Fock方法求解了大N Gross-Neveu模型中两重子的散射问题。在这里,我们将这个结果推广到涉及任何数量和复杂性的散射体的散射过程。结果是外推的几个重子问题的解决方案,发现通过一个联合的标量平均场和狄拉克旋量,并提出了分析形式。到目前为止,它已经在8重子问题中得到了数值验证,但仍然缺少完整的数学证明。所示的例子包括在这个玩具模型中的质子-原子核和原子核-原子核散射的模拟。一般结果的所有参数都可以通过一个或两个重子的输入来确定。我们把这一发现作为因式分解散射的证据,但在复合多费米子状态而不是基本费米子的水平上。

英文摘要:

Scattering of two baryons in the large-N Gross-Neveu model via the time-dependent Dirac-Hartree-Fock approach has recently been solved in closed analytical form. Here, we generalize this result to scattering processes involving any number and complexity of the scatterers. The result is extrapolated from the solution of few baryon problems, found via a joint ansatz for the scalar mean field and the Dirac spinors, and presented in analytical form. It has been verified numerically for up to 8-baryon problems so far, but a full mathematical proof is still missing. Examples shown include the analogue of proton-nucleus and nucleus-nucleus scattering in this toy model. All the parameters of the general result can be fixed by one- and two-baryon input only. We take this finding as evidence for factorized scattering, but on the level of composite multi-fermion states rather than elementary fermions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑