论文标题
预热时代的宇宙显微镜
A Cosmic Microscope for the Preheating Era
论文作者
论文摘要
具有空间背景的光场可以调节宇宙预热，并烙印在微小尺度上对大规模波动的预热动力学的非线性效应。这为我们提供了对预热时代的独特探测，我们将“宇宙显微镜”配音为“宇宙显微镜”。我们确定了预热对标量扰动的独特效果，而标量的扰动将光量表的原始范围的原始波动转化为方形波变成二极管，就像二极管一样，就像当地的效果。当前的观察结果，可以通过不久的将来的宇宙探针来达到。
Light fields with spatially varying backgrounds can modulate cosmic preheating, and imprint the nonlinear effects of preheating dynamics at tiny scales on large scale fluctuations. This provides us a unique probe into the preheating era which we dub the "cosmic microscope.'' We identify a distinctive effect of preheating on scalar perturbations that turns the Gaussian primordial fluctuations of a light scalar field into square waves, like a diode. The effect manifests itself as local non-Gaussianity. We present a model, "modulated partial preheating," where this nonlinear effect is consistent with current observations and can be reached by near future cosmic probes.
