论文标题
$ f（t）$扩展重力理论中的玻色子星星
Boson stars in $f(T)$ extended theory of gravity
论文作者
论文摘要
在基于修改的扭转$ f（t）$ GRAVITY的框架内考虑了非相互作用的大规模复杂标量场的球形对称配置，代表非旋转玻色子星星，其中$ f（t）= t +α\，t^2/2 $。我们发现，对于$α$的足够大的负值，玻色子恒星的质量可以任意大。这与一般相对性相反，在这种相对性的情况下，上限$ m_ {max} \ sim m_ {planck}^2/m $与由非相互作用标量场构建的大量玻色子星星以及在天体物理学制度中存在的玻色子星星的质量只能与scallosical carterar Field Field Field Selftractractions的引入获得。在足够大的负$α$的情况下，我们还发现所有质量的负重力结合能，这可以看作是这种构型稳定性的指示。在其积极的状态下，$α$不能任意大大，因为$ f（t）$ - 流体发展的压力成分中的相位过渡。据报道，这种现象发生在$ f（t）$重力理论中构建的多变态恒星中。
Spherically symmetric configurations of the non-interacting massive complex scalar field, representing non-rotating boson stars, are considered within the framework of the modified torsion based $f(T)$ gravity, with $f(T) = T + α\, T^2/2$. We find that with sufficiently large negative value of $α$ the mass of the boson stars can be made arbitrarily large. This is in contrast to General Relativity where an upper bound, $M_{max} \sim M_{Planck}^2/m$, to the mass of the boson stars built from the non-interacting scalar field exists and where the masses of boson stars in the astrophysical regime can be obtained only with the introduction of the scalar field self-interaction. With sufficiently large negative $α$ we also find negative gravitational binding energy for all masses, which can be seen as an indication of the stability of such configurations. In its positive regime, $α$ can not be made arbitrarily large as a phase transition in the stress--energy components of the $f(T)$-fluid develops. This phenomenon has already been reported to occur in polytropic stars constructed within the $f(T)$ gravity theory.
