如果暴胀子是旋量凝聚呢？
What-if inflaton is a spinor condensate?
摘要：
在通常的宇宙学暴胀方案中，标量场--暴胀子--通常被假定为基本场。在这篇文章中，我们问：如果标量场是一个旋量凝聚，那么观测到的信号是什么？有没有办法区分正则标量场和旋量凝聚驱动模型？在均匀各向同性的背景下，我们证明了尽管暗旋量（Elko）凝聚导致的加速方程与正则标量场驱动的暴胀的加速方程相同，但两种模型的动力学是不同的.在慢滚限制，我们表明，该模型，预测运行的标量光谱指数与WMAP数据一致。我们发现旋量凝聚和正则标量场驱动模型之间的一致性关系是不同的，这可以通过未来的CMB和引力波任务来检验。
英文摘要：
In the usual cosmological inflationary scenarios, the scalar field -- inflaton -- is usually assumed to be an elementary field. In this essay, we ask: What are the observational signatures, if the scalar field is a spinor condensate? and Is there a way to distinguish between the canonical scalar field and the spinor condensate driven models? In the homogeneous and isotropic background, we show that, although the dark-spinor (Elko) condensate leads to the identical acceleration equation as that of the canonical scalar field driven inflation, the dynamics of the two models are different. In the slow-roll limit, we show that the model, predicts a running of scalar spectral index consistent with the WMAP data. We show that the consistency relations between the spinor condensate and canonical scalar field driven model are different which can be tested using the future CMB and gravitational wave missions.
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