论文标题
带浓缩咖啡的基本物理学：对Bekenstein的限制和天体物理和局部探针的暗能量模型
Fundamental physics with ESPRESSO: Constraints on Bekenstein and dark energy models from astrophysical and local probes
论文作者
论文摘要
在有效的四维领域理论中，自然会将动力标量字段与该理论的其余自由度息息，除非假定一些新的对称性来抑制这些耦合。特别是，与电磁扇形的耦合将导致精细结构常数的时空变化，$α$。因此，$α$的时空稳定性的天体物理测试是对新物理学的有力探测。 Here we use ESPRESSO and other contemporary measurements of $α$, together with background cosmology data, local laboratory atomic clock and Weak Equivalence Principle measurements, to place stringent constraints on the simplest examples of the two broad classes of varying $α$ models: Bekenstein models and quintessence-type dark energy models, both of which are parametric extensions of the canonical $Λ$CDM model.在这两种情况下，先前报道的限制因素均提高了十倍以上。这种改进在很大程度上是由于局部限制非常强，但是天体物理测量可以有助于打破宇宙学和基本物理参数之间的变性。
Dynamical scalar fields in an effective four-dimensional field theory are naturally expected to couple to the rest of the theory's degrees of freedom, unless some new symmetry is postulated to suppress these couplings. In particular, a coupling to the electromagnetic sector will lead to spacetime variations of the fine-structure constant, $α$. Astrophysical tests of the space-time stability of $α$ are therefore a powerful probe of new physics. Here we use ESPRESSO and other contemporary measurements of $α$, together with background cosmology data, local laboratory atomic clock and Weak Equivalence Principle measurements, to place stringent constraints on the simplest examples of the two broad classes of varying $α$ models: Bekenstein models and quintessence-type dark energy models, both of which are parametric extensions of the canonical $Λ$CDM model. In both cases, previously reported constraints are improved by more than a factor of ten. This improvement is largely due to the very strong local constraints, but astrophysical measurements can help to break degeneracies between cosmology and fundamental physics parameters.
