论文标题
解决自相互作用的Proca领域的病理：Proca星的案例研究
Resolving the pathologies of self-interacting Proca fields: A case study of Proca stars
论文作者
论文摘要
有人认为，由于矢量场的单数有效度量的动态形成，这是梯度或幽灵不稳定性的开始，因此自我互动的大规模向量场是病理学的。我们讨论这种奇异性形成不一定是一个基本问题，而是对大规模向量场的有效田间理论（EFT）描述的细分。通过使用大规模矢量领域的紫外线（UV）完成模型，我们证明，即使在没有任何病理学的梯度不稳定的情况下，eft遭受了梯度不稳定，eft在紫外线上仍可以将eft描述在eft中仍然有效，并且在EFT中，eft的不稳定可以像eft一样高，即使在uv中的渐变不稳定可以像标准的动力一样，即使eft不稳定阶段不稳定，也可以在eft上有效，即另一方面，我们发现在幽灵不稳定性出现之前，EFT描述已破裂。这表明，由于EFT动态地倾向于接近幽灵不稳定的发作，因此可能会自发地兴奋地兴奋地治愈EFT的病理。
It has been argued that a self-interacting massive vector field is pathological due to a dynamical formation of a singular effective metric of the vector field, which is the onset of a gradient or ghost instability. We discuss that this singularity formation is not necessarily a fundamental problem but a breakdown of the effective field theory (EFT) description of the massive vector field. By using a model of ultraviolet (UV) completion of the massive vector field, we demonstrate that a Proca star, a self-gravitating condensate of the vector field, continues to exist even after the EFT suffers from a gradient instability without any pathology at UV, in which the EFT description is still valid and the gradient instability in EFT may be interpreted as a standard dynamical instability of a high-density boson star from the UV perspective. On the other hand, we find that the EFT description is broken before the ghost instability appears. This suggests that a heavy degree of freedom may be spontaneously excited to cure the pathology of the EFT as the EFT dynamically tends to approach the onset of the ghost instability.
