F Fermi National Accelerator Laboratory FERMILAB-Pub-97 / 051-A Hybrid Inflation in Supergravity
F Fermi National Accelerator Laboratory FERMILAB-Pub-97 / 051-A Hybrid Inflation in Supergravity
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F 费米国家加速器实验室 FERMILAB-Pub-97 / 051-A 超重力混合暴胀
DOI：
10.1088/1126-6708/2000/10/012
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发表时间：
1998
影响因子：
5.4
通讯作者：
A. Riotto
中科院分区：
文献类型：
--
作者：
Andrei Linde;A. Riotto
我们展示了如何在一个超对称模型中成功地实现混合暴胀，该模型具有规范群GPS= SU (4) cx SU (2) lx SU (2)R。通过包含一个不可重整的超势项，我们产生了一个暴胀谷，沿着这个谷，gsis被打破为标准模型规范群。因此，模型所预测的双荷磁单极子的灾难性产生不可能发生在暴胀结束时。宇宙背景探测器的结果可以用相关耦合常数的自然值（10−3阶）和gps的对称破缺尺度（1016GeV阶）再现。密度扰动的谱指数介于1和0.9之间。此外，μ项是通过Peccei-Quinn对称产生的，质子实际上是稳定的。宇宙中的重子发生是通过轻生发生的。重子不对称性的低氘丰度约束、再热温度的引力子限制以及来自SUPER-KAMIOKANDE的几乎最大νμ ν ντ混合的要求可以同时满足由太阳中微子问题的大角度MSW分辨率、SUPER-KAMIOKANDE结果和SU (4)csymmetry分别确定的mνμ、mντ和最重的狄拉克中微子质量。
We show how hybrid inflation can be successfully realized in a supersymmetric model with gauge group GPS= SU (4)c× SU (2)L× SU (2)R. By including a non-renormalizable superpotential term, we generate an inflationary valley along which GPSis broken to the standard model gauge group. Thus, catastrophic production of the doubly charged magnetic monopoles, which are predicted by the model, cannot occur at the end of inflation. The results of the cosmic background explorer can be reproduced with natural values (of order 10− 3) of the relevant coupling constant, and symmetry breaking scale of GPSof the order of 1016GeV. The spectral index of density perturbations lies between unity and 0.9. Moreover, the μ-term is generated via a Peccei-Quinn symmetry and proton is practically stable. Baryogenesis in the universe takes place via leptogenesis. The low deuterium abundance constraint on the baryon asymmetry, the gravitino limit on the reheat temperature and the requirement of almost maximal νμ− ντmixing from SUPER-KAMIOKANDE can be simultaneously met with mνμ, mντand heaviest Dirac neutrino mass determined from the large angle MSW resolution of the solar neutrino problem, the SUPER-KAMIOKANDE results and SU (4)csymmetry respectively.