论文标题
Horndeski仪表率耦合的界限
Bounds on the Horndeski Gauge-Gravity Coupling
论文作者
论文摘要
Horndeski仪表重力耦合是重力和仪表玻色子之间的主要非最小相互作用，它保留了所有对称性和粒子物理和一般相对性标准模型的物理自由度的数量。在本文中，我们研究了非最小相互作用在天文学和宇宙学中的影响，并在相关的无量纲耦合常数$λ$上获得上限。从应用于紧凑的天文对象的仪表玻色子方程的修改，我们找到了上限$ |λ| \ Lessim 10^{88} $，$ |λ| \ Lessim 10^{75} $和$ |λ| \ Lessim 10^{84} $分别来自黑洞阴影，中子星和白色矮人。绑定的$ |λ| \ Lessim 10^{75} $从中子星推导的是最强的，并且在此参数上提供了二十个数量级的改进。另一方面，该术语对重力泊松方程的修饰的影响导致较弱的绑定$ |λ| \ Lessim 10^{98} $。从引力波的传播中，我们还发现$ |λ| \ Lessim 10^{119} $，甚至更弱。
The Horndeski gauge-gravity coupling is the leading non-minimal interaction between gravity and gauge bosons, and it preserves all the symmetries and the number of physical degrees of freedom of the standard model of particle physics and general relativity. In this paper we study the effects of the non-minimal interaction in astronomy and cosmology, and obtain upper bounds on the associated dimensionless coupling constant $λ$. From the modification of equations of motion of gauge bosons applied to compact astronomical objects, we find upper bounds $|λ| \lesssim 10^{88}$, $|λ| \lesssim 10^{75}$ and $|λ| \lesssim 10^{84}$ from a black hole shadow, neutron stars and white dwarfs, respectively. The bound $|λ| \lesssim 10^{75}$ that is deduced from neutron stars is the strongest and provides twenty orders of magnitude improvement of the previously known best bound on this parameter. On the other hand, the effects of this term on modification of the gravitational Poisson equation lead to a weaker bound $|λ| \lesssim 10^{98}$. From the propagation of gravitational waves we also find $|λ| \lesssim 10^{119}$, which is even weaker.
