论文标题
玻色子和中子星的密度增加
Boson and neutron stars with increased density
论文作者
论文摘要
我们分别在具有明确的时间依赖性的实际标量场的标量重力模型中分别讨论玻色子星和中子星。尽管我们模型中的玻色子星（与中子星形相反）并不具有硬核，但我们发现，在两种情况下，标量头发形成的质量效应相似：重力标量的存在使两种类型的恒星都可以使两种类型的恒星都存在于较大的中央密度以及在给定半径上比其一般相对对手更大的质量。特别是，我们发现具有标量头发的新型中子星类型，其半径非常接近相应的Schwarzschild半径，因此密度与黑洞的密度相当。对于单个重子的腐烂，解决方案的新分支是稳定的。
We discuss boson stars and neutron stars, respectively, in a scalar-tensor gravity model with an explicitly time-dependent real scalar field. While the boson stars in our model -- in contrast to the neutron stars -- do not possess a hard core, we find that the qualitative effects of the formation of scalar hair are similar in both cases : the presence of the gravity scalar allows both type of stars to exist for larger central density as well as larger mass at given radius than their General Relativity counterparts. In particular, we find new types of neutron stars with scalar hair which have radii very close to the corresponding Schwarzschild radius and hence are comparable in density to black holes. This new branch of solutions is stable with respect to the decay into individual baryons.
