利用GammeV余辉实验约束变色龙场论
Constraining chameleon field theories using the GammeV afterglow experiments
摘要：
伽马V实验限制了变色龙标量场与物质和光子的耦合。在这里，我们提出了一个详细的计算这些约束下的变色龙余辉率。研究了GammeV约束对计算中各种假设的依赖性。我们讨论GammeV-追逐，第二代GammeV实验，这将提高GammeV在几个主要方面。使用我们的变色龙余辉率的计算，我们预测模型独立的约束GammeV-CHASE实现。然后，我们将这些限制应用到各种变色龙模型，包括四次变色龙和变色龙暗能量模型。新实验将能够探测当前测试无法触及的参数空间的大区域，例如第五力搜索，对遥远天体物理对象变暗的限制以及精细结构常数变化的界限。
英文摘要：
The GammeV experiment has constrained the couplings of chameleon scalar fields to matter and photons. Here we present a detailed calculation of the chameleon afterglow rate underlying these constraints. The dependence of GammeV constraints on various assumptions in the calculation is studied. We discuss GammeV--CHASE, a second-generation GammeV experiment, which will improve upon GammeV in several major ways. Using our calculation of the chameleon afterglow rate, we forecast model-independent constraints achievable by GammeV--CHASE. We then apply these constraints to a variety of chameleon models, including quartic chameleons and chameleon dark energy models. The new experiment will be able to probe a large region of parameter space that is beyond the reach of current tests, such as fifth force searches, constraints on the dimming of distant astrophysical objects, and bounds on the variation of the fine structure constant.
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