指数宇宙子势的自然性与宇宙学常数问题
Naturalness of exponential cosmon potentials and the cosmological constant problem
摘要：
我们讨论了指数势的本质，表明在标量场的空间，以及小的时间依赖的宇宙子质量，几乎平坦的方向，可以与异常伸缩对称性。我们认为，物理学的宇宙学常数是普朗克尺度物理，并评论量子涨落的作用。我们提出了三个更高的维度方案如何失控的"宇宙学常数“为零可以与稳定的粒子物理性质相结合，导致最多的”基本耦合“的小变化。
英文摘要：
We discuss the naturalness of exponential potentials for quintessence, showing that the resulting almost flat direction in the space of scalar fields, as well as the small time dependent cosmon mass, can be related to an anomalous dilatation symmetry. We argue that the physics of the cosmological constant is Planck scale physics, and comment on the role of quantum fluctuations. We present three higher dimensional scenarios how a runaway of the ``cosmological constant'' to zero can be combined with stable particle physics properties, leading at most to small variations of the ``fundamental couplings''.
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