标题： 用弱引力透镜测试暗能量范式 显示英文标题

标题： Testing dark energy paradigms with weak gravitational lensing

摘要： 任何用来解释宇宙加速膨胀的理论都会预测膨胀历史、结构增长以及所有相关观测之间的一致性关系。 目前，我们已经有了来自Ia型超新星、宇宙微波背景温度和极化谱以及重子声学振荡的高质量膨胀历史测量数据。 我们可以利用这些数据集的约束来预测未来对结构增长的探测应该观察到什么结果。 我们将这种方法应用于预测如果生活在LambdaCDM宇宙中（无论是否存在空间曲率），预期的宇宙剪切功率谱范围是什么，以及哪些结果会不一致并因此证伪该模型。 尽管如果允许任意的第五元素状态方程$-1\le w(z)\le 1$，预测会有所放松，但我们发现，由于透镜效应过多而排除LambdaCDM的任何观测也会排除所有第五元素模型，无论是否存在早期暗能量。 我们进一步探讨了非线性物质功率谱中的不确定性，例如来自近似拟合公式如Halofit、温暗物质或重子的影响，这些如何影响这些限制。 显示英文摘要

摘要： Any theory invoked to explain cosmic acceleration predicts consistency relations between the expansion history, structure growth, and all related observables. Currently there exist high-quality measurements of the expansion history from Type Ia supernovae, the cosmic microwave background temperature and polarization spectra, and baryon acoustic oscillations. We can use constraints from these datasets to predict what future probes of structure growth should observe. We apply this method to predict what range of cosmic shear power spectra would be expected if we lived in a LambdaCDM universe, with or without spatial curvature, and what results would be inconsistent and therefore falsify the model. Though predictions are relaxed if one allows for an arbitrary quintessence equation of state $-1\le w(z)\le 1$, we find that any observation that rules out LambdaCDM due to excess lensing will also rule out all quintessence models, with or without early dark energy. We further explore how uncertainties in the nonlinear matter power spectrum, e.g. from approximate fitting formulas such as Halofit, warm dark matter, or baryons, impact these limits.