We investigate supersymmetric hybrid inflation in a realistic model based on the gauge symmetry $SU(4{)}_c\times SU(2{)}_L\times SU(2{)}_R$. The minimal supersymmetric standard model (MSSM) $\mu$ term arises, following Dvali, Lazarides, and Shafi, from the coupling of the MSSM electroweak doublets to a gauge singlet superfield, which plays an essential role in inflation. The primordial monopoles are inflated away by arranging that the $SU(4{)}_c\times SU(2{)}_L\times SU(2{)}_R$ symmetry is broken along the inflationary trajectory. The interplay between the (above) $\mu$ coupling, the gravitino mass, and the reheating following inflation is discussed in detail. We explore regions of the parameter space that yield gravitino dark matter and observable gravity waves with the tensor-to-scalar ratio $r\sim {10}^{-4}–{10}^{-3}$.

中文翻译：

---

μ混合膨胀，引力子暗物质和可观察到的重力波

我们基于量规对称性在现实模型中研究超对称混合膨胀 $\mathrm{小号}ü（4{）}_C\times \mathrm{小号}ü（\mathrm{2个}{）}_{\mathrm{大号}}\times \mathrm{小号}ü（\mathrm{2个}{）}_{\mathrm{[R}}$。最小超对称标准模型（MSSM）$\mu$在Dvali，Lazarides和Shafi之后，出现了这个术语，这是因为MSSM电弱双峰与规范单峰超场的耦合，而后者在通货膨胀中起着至关重要的作用。通过安排原始单极子膨胀，$\mathrm{小号}ü（4{）}_C\times \mathrm{小号}ü（\mathrm{2个}{）}_{\mathrm{大号}}\times \mathrm{小号}ü（\mathrm{2个}{）}_{\mathrm{[R}}$对称性沿膨胀轨迹破裂。（上方）之间的相互作用$\mu$详细讨论了耦合，引力子质量以及充气后的再加热。我们探索了产生张量标量比的引力子暗物质和可观察到的引力波的参数空间区域$\mathrm{[R}〜{10}^{-4}–{10}^{-3}$。