论文标题
Sgoldstinoless非振荡通货膨胀模型中Susy Breaking的宇宙学烙印
Cosmological Imprints of SUSY Breaking in Models of Sgoldstinoless Non-Oscillatory Inflation
论文作者
论文摘要
在超级实力中，sgoldstino的动力学 - 与低能量下超对称性相关的戈德斯蒂诺超级场地的超级球员 - 可以实质性地改变原始宇宙中通货膨胀的动力学。所谓的sgoldstinoless模型假设存在nilpotency约束$ s^2 = 0 $，从而有效地从理论中删除了sgoldstino。提出了这样的模型，以实现具有单个标量场的非振荡通货膨胀情景，在通货膨胀结束时具有长时间的kination，因此是非标准的后宇宙宇宙学。使用有效的操作员，我们提出了模型，其中sgoldstino稳定在接近原点以重现nilpotent约束。我们表明，较小的sgoldstino波动可能会导致宇宙学史上的大量反应。我们研究了这种后反应对在宇宙微波背景中观察到的通货膨胀的影响，并面对模型，以一系列约束，包括$Δn_{\ rm eff} $的限制。我们表明，大型超对称性尺度极限中电势的特殊形式可以在通货膨胀产生的标量功率谱中产生峰值。我们研究了某些扰动模式如何在Kination期间或之后重新进入地平线，并表明大型超对称性量表可能导致早期宇宙中具有各种质量的原始黑洞形成。
In supergravity, the dynamics of the sgoldstino -- superpartner of the goldstino superfield associated with the breaking of supersymmetry at low energy -- can substantially modify the dynamics of inflation in the primordial Universe. So-called sgoldstinoless models assume the existence of a nilpotency constraint $S^2=0$ that effectively removes the sgoldstino from the theory. Such models were proposed to realise non-oscillatory inflation scenarios with a single scalar field, which feature a long period of kination at the end of inflation, and therefore a non-standard post-inflationary cosmology. Using effective operators, we propose models in which the sgoldstino is stabilized close to the origin to reproduce the nilpotent constraint. We show that small sgoldstino fluctuations may lead to a sizeable back-reaction on the cosmological history. We study the effect of this back-reaction on the inflation observables measured in the cosmic microwave background and confront the model to a series of constraints including limits on $ΔN_{\rm eff}$. We show that the peculiar form of the potential in the large supersymmetry breaking scale limit can generate peaks in the scalar power spectrum produced from inflation. We study how certain perturbation modes may re-enter the horizon during or after kination and show that a large supersymmetry breaking scale may lead to the formation of primordial black holes with various masses in the early Universe.
