SUSY平方向衰变--在单位规范中研究粒子产生和预热的前景
SUSY Flat Direction Decay - the prospect of particle production and preheating investigated in the unitary gauge
摘要：
我们期待在非微扰粒子生产后，从超对称性旋转本征态，从而避免标准绝热条件产生的平面方向通货膨胀的可能性。这可能导致预热，并阻止宇宙热化的延迟。我们研究了平面方向$LLE^c$和$U^cD^cD^c$，发现没有粒子产生。这两个方向非常重要，因为它们被命名为暴胀子的可能候选者。我们研究了$QLQLQLE^c$并发现了粒子的产生以及预热的可能性。我们研究了同时出现的$LLE^c$和$U^cD^cD^c$方向，发现没有产生。最后，我们同时研究了$LLE^c$和$QLD^c$-其中一个L-域是公共的。在这里，我们确实发现了粒子的产生，因此有可能预热。这意味着，如果超对称性平坦方向是为了延迟热化作用，从而解释引力子的产生（缺乏），那么就有必要解释为什么像$QLQLQLE^c$这样的复杂方向不存在，以及为什么像$LLE^c$和$QLD^c$这样的组合不同时存在。
英文摘要：
We look at the possibility of non-perturbative particle production after inflation from SUSY flat directions produced by rotating eigenstates thereby avoiding the standard adiabaticity conditions. This might lead to preheating and prevent the delay of thermalisation of the universe. We investigate the flat directions $LLE^c$ and $U^cD^cD^c$ and find no particle production. These 2 directions are very important, since they have been named as possible candidates for being the inflaton. We investigate $QLQLQLE^c$ and find particle production and therefore the possibility of preheating. We investigate the $LLE^c$ and $U^cD^cD^c$ directions appearing simultaneously, and find no production. Finally, we investigate $LLE^c$ and $QLD^c$ simultaneously - with one L-field in common. Here we do find particle production and therefore the possibility of preheating. This means that if SUSY flat directions are to delay thermalisation and thus explain the (lack of) gravitino production, it is necessary to explain why complicated directions as $QLQLQLE^c$ are not exited, and why combinations like $LLE^c$ and $QLD^c$ are not both exited.
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