论文标题
反物质自由落体实验和不对称性电荷
Antimatter Free-Fall Experiments and Charge Asymmetry
论文作者
论文摘要
我们提出了一种可以使用改良的反物质重力实验的方法，以对反物质电荷中立进行高精度测试。该提案基于在地球重力场的反物质自由落体重力实验中应用强，外部，垂直定向的电场。所提出的实验设置有可能大大提高反物质的电荷 - 空压参数$ {\ overlineε} _q $的限制。从理论方面来说，我们分析了与参数成正比的物质和反物质的假定电荷 - 质量对称性的可能性。我们发现，这种不对称性可以由四维洛伦兹式操作员描述，这些操作员在不破坏场理论的位置而破坏CPT。该机制涉及与现场操作员分解为粒子或反颗粒场贡献的相互作用的相互作用。我们的Lagrangian否则是Lorentz，也是PT不变的。在参数$ {\overlineε} _q $上得出的约束不取决于假定的理论模型。
We propose a method by which one could use modified antimatter gravity experiments in order to perform a high-precision test of antimatter charge neutrality. The proposal is based on the application of a strong, external, vertically oriented electric field during an antimatter free-fall gravity experiment in the gravitational field of the Earth. The proposed experimental setup has the potential to drastically improve the limits on the charge-asymmetry parameter ${\overline ε}_q$ of antimatter. On the theoretical side, we analyze possibilities to describe a putative charge-asymmetry of matter and antimatter, proportional to the parameters $ε_q$ and ${\overline ε}_q$, by Lagrangian methods. We found that such an asymmetry could be described by four-dimensional Lorentz-invariant operators that break CPT without destroying the locality of the field theory. The mechanism involves an interaction Lagrangian with field operators decomposed into particle or antiparticle field contributions. Our Lagrangian is otherwise Lorentz, as well as PT invariant. Constraints to be derived on the parameter ${\overline ε}_q$ do not depend on the assumed theoretical model.
