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arXiv 1012.4632hep-phhep-latnucl-th
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暴胀后费米子产生的量子理论

Quantum theory of fermion production after inflation

J. Berges, D. Gelfand, J. Pruschke

摘要:

我们表明,量子效应显着提高生产的费米子后,在早期宇宙的膨胀后,在存在的玻色子量子的高激发预热。因此,费米子迅速接近一个准定态分布与热占领在红外线,而暴胀子进入湍流标度制度。基于均匀背景场的狄拉克方程的标准半经典描述的失败是由非微扰的高玻色子占据数引起的。在预热过程中,暴胀子占据数增加,从而导致从暴胀子量子的再散射中产生费米子的动力学机制。本文评述了重离子碰撞中高占规范玻色子产生夸克物质场的有关现象。

英文摘要:

We show that quantum effects dramatically enhance the production of fermions following preheating after inflation in the early Universe in the presence of high excitations of bosonic quanta. As a consequence fermions rapidly approach a quasistationary distribution with a thermal occupancy in the infrared, while the inflaton enters a turbulent scaling regime. The failure of standard semiclassical descriptions based on the Dirac equation with a homogeneous background field is caused by nonperturbatively high boson occupation numbers. During preheating the inflaton occupation number increases, thus leading to a dynamical mechanism for the enhanced production of fermions from the rescattering of the inflaton quanta. We comment on related phenomena in heavy-ion collisions for the production of quark matter fields from highly occupied gauge bosons.

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。

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