凝聚体沿超对称平坦方向非微扰衰变产生的引力波
Gravitational Waves from the Non-Perturbative Decay of Condensates along Supersymmetric Flat Directions
摘要：
最近的研究表明，在超对称理论中，特定的非微扰效应可能导致扁平方向凝聚体的爆炸性衰变。我们明确证实了这个过程的效率与晶格模拟：经过几个旋转的凝聚体在其复杂的平面，他们的大部分能量被迅速转换成不均匀的波动。然后，我们指出，这产生了一个引力波的背景，这取决于暴胀子部门和今天的频率范围内的Hz-kHz的下降。我们计算得到的光谱，并研究它如何依赖于参数。我们表明，这些重力波可以观察到即将到来的实验，如先进的LIGO和关键取决于（i）初始VEV的平坦方向时，他们开始振荡，（ii）他们的软超对称性破坏质量和（iii）宇宙的再热温度。这一信号可能为暴胀和低能超对称性打开一扇新的观测窗口。
英文摘要：
It has recently been shown that specific non-perturbative effects may lead to an explosive decay of flat direction condensates in supersymmetric theories. We confirm explicitly the efficiency of this process with lattice simulations: after few rotations of the condensates in their complex plane, most of their energy is quickly converted into inhomogeneous fluctuations. We then point out that this generates a gravitational wave background which depends on the inflaton sector and falls in the Hz-kHz frequency range today. We compute the resulting spectrum and study how it depends on the parameters. We show that these gravity waves can be observable by upcoming experiments like Advanced LIGO and depend crucially on (i) the initial VEV of flat directions when they start to oscillate, (ii) their soft SUSY-breaking mass and (iii) the reheat temperature of the universe. This signal could open a new observational window on inflation and low-energy supersymmetry.
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